Influence of Tang-dynasty China
- Related Topics:
- tonkori
- fūrin
- katarimono
- kumiuta
- nōkan
The dominant musical style of early gagaku was, naturally, from China and was called Tang music (tōgaku). In Japan, as in Korea, the establishment and maintenance of such a music has made it possible for modern listeners to hear foreign versions of famous pieces long forgotten in the country of their origin. For example, there are names of pieces played and dances performed in Japan that are also found in Tang Chinese lists. Unlike in China, however, many of those works are still played in Japan, and a few of the original costumes and masks used at that time are preserved. Perhaps the most-valuable treasure in Japan for such materials from the ancient traditions of all of East Asia is the Shōsō Repository, a storehouse built for the household goods of the emperor Shōmu after his death in 756. In that collection (which includes a few later additions from temples) one can find some 21 percussion instruments, 12 strings, and 12 winds, in addition to dance masks, notation, and drawings. Some of the materials are Chinese or Korean imports, while others are Japanese-made. The Chinese variant of the arched harp of the ancient Middle East (in Japanese the kugo) is best preserved here. The very decorations of certain instruments can also be historical gold mines. For example, the protective cover across the face of one plucked lute (biwa) contains the picture of a performer riding a camel near a palm-treed oasis. Another such cover depicts a group of foreign (i.e., not East Asian) musicians accompanying an energetic dancer, all on the back of an elephant. Etchings along a hunting bow show scenes of dancing and musical performances connected with a popular imported art of acrobatics and juggling called sangaku.
The Heian period
Music of the left and of the right
Further images of Japanese musical life can be captured from the Heian period (794–1185). In the very first chapter of the 10th-century Ochikubo monogatari, one of Japan’s earliest novels, the sad fate of the heroine is noted by the fact that she was never able to learn how to play the Chinese seven-stringed qin zither, although she did have some training in Japanese koto music. The famous 11th-century works, such as Murasaki Shikibu’s Genji monogatari (The Tale of Genji), are filled with romantic koto, biwa, and flutes, as well as gagaku and bugaku performances and the singing of many songs. Diaries also show that the courtiers, now moved to Kyōto, found music to be a useful and frequent adjunct to their insular courtly life. It was in this period that the many forms of official court music were organized into two basic categories.
The so-called music of the left was called tōgaku and contained the Chinese- and Indian-derived pieces. The music of the right was called komagaku and contained all Korean and Manchurian examples. In both categories there were pieces that by this time may have been Japanese arrangements or original compositions. The terms left and right were derived from the Confucian-based administration system of the new capital, which divided the entire government into such categories. In bugaku they controlled the costumes of the dancers, left dances emphasizing red, right dances, green. In gagaku those two major divisions standardized the instrumentation of the ensembles. When playing dance accompaniments, stringed instruments were deleted, but the two orchestras for purely instrumental performances were complete. Each used plucked 12-stringed zithers with movable bridges called gaku-sō or by the generic term koto. The string section was completed by a four-stringed plucked lute, the gaku biwa. A small hanging gong (shōko) and a large hanging drum (tsuri daiko) were found in both. The leader of a tōgaku piece would use a barrel drum (kakko) with two lashed heads struck with sticks, while a komagaku piece would be led by an hourglass san no tsuzumi drum similar to the Korean changgo. The standard melodic instrument for both was the double-reed hichiriki, with a komabue flute being added in komagaku and a ryuteki flute in tōgaku. The Japanese shō mouth organ appears in both.
Music notation
In modern performances the shō plays a fascinating cluster of harmonies (different pitches sounded simultaneously), although there is some feeling that the original Chinese interpretation of its notation was melodic, with little or no harmonic addition. Part of the performance problem, outside the impressive age of the music, is that gagaku notations came only in part books, which were often rather like Western “lead sheets”; i.e., they served as memory aids rather than detailed guides. For example, the shō notation gives only one note for every four beats of a standard piece. The modern interpretation is that each note represents the bottom of a chord (specific set of three or more pitches sounded simultaneously), but the notes might actually have been the skeleton of a melody. The earliest surviving form of instrumental notation in Japan is a book, dated 768, of lute (biwa) music found in the Shōsō Repository. The earliest flute part book is dated 966, and a few additional wind or string books remain from the 10th to the 13th century. More-abundant sources can be found from the last 300 years. Scores did not exist until modern times.
The traditional part-book notations reflect the importance of oral rote learning and the guidance of a teacher. For example, flute and hichiriki notations in their standard forms consist of columns first marked off by dots representing major percussion time markers (usually every four beats, though there are five- and six-beat pieces). Next, one finds a column of syllables called shoga, which were used to help players memorize the instrumental part by singing it. With that system it was even possible to substitute a vocal rendition of one part in an ensemble if that instrument was missing. Finally, there is another parallel column that contains a skeleton of notes or fingerings on the instrument itself. Obviously one can fully comprehend the subtle ornamentations and nuances of any melody notated in this manner only through the guidance of a teacher. In the case of the string notation, one generally finds only the names of stereotyped patterns along with occasional notes. The percussion notations likewise consist of names for stereotyped patterns. If both the strings and percussion are played as written, they appear to be merely time markers, in accordance with the colotomic principle found in much Southeast Asian and some East Asian music (the demarcation of time intervals by the entrance of specific instruments in prescribed order, a procedure contributing to the musical structure and imparting a sense of progression).
But, as in jazz, there must have been more to the music hidden in the oral tradition. Further clues as to the performance practice of the music in addition to its underlying music theory and its practical uses are found in several important sources. In 735 an ambassador, Kibi Makibi, brought back from China a 10-volume digest of musical matters (called in Japanese Gakusho yoroku), which implies the Chinese foundation of the art. In 1233 a court dancer, Koma Chikazane, produced another 10 volumes—the Kyōkunshō, describing Japanese gagaku matters. Of equal value is the Taigenshō, written by a gagaku musician, Toyohara Sumiaki, in 1512, when court music seemed on the verge of extinction.
Tonal system
By studying a combination of sources—Buddhist music-theory tomes, part books, and present-day performance practice—one can understand many of the basic principles upon which ancient Japanese music was founded. From what has already been said about the beginnings of Japanese court and religious music, it is not surprising to find that the complete tone system of both types consists of the 12 tones of the Chinese system. The only difference between the Chinese and Japanese tones is the pronunciation of the character for each pitch’s name. Only the Chinese name is given in the illustration below. 
Of the four Japanese scales ryo, ritsu, yo, and in, the first two show that ancient Japanese music followed the East Asian tradition in the use of two seven-tone scales, each with a pentatonic core. 
The ryo scale shows no great difference from the Chinese seven-tone scale. 
The ritsu scale, however, seems to reveal the early presence of an indigenous Japanese tonal ideal with the placement of its half steps.
Japanese gagaku and Buddhist music theories contain most of the classical Chinese ideas concerning transpositions and modes, but in practice the ryo and ritsu scales could be constructed on only three pitches each: ryo on D (ichikotsu), G (sōjō), and E (taishiki); and ritsu on E (hyōjō), A (ōshiki), and B (banshiki). Note that the pitches for such transpositions form a classic pentatonic (D–E–G–A–B). The two names for the pitch E are present in order to make a distinction between the two scales possible on that same tone. In the unaccompanied court songs and the chants of Buddhism, one can observe the use of other transpositions, for all oral traditions in the world “adjust” notated pitches to the preferences of given singers. In gagaku instrumental music, the six tonalities are observed, part books for each instrument being organized in sections by the tonalities of the compositions. A few pieces, such as Etenraku, are found in more than one tonality. Although set in two ritsu tonalities (hyōjō and banshiki), it is obvious from that example that the piece, which is a “crossover” (watashimono), is more than merely transposed. 
The pitch centre of the melody also has been changed (from E to C♯). That is one of the few clear examples in performance practice of the mode systems spoken of in music theory. A glance at the related folk song “Kuroda-bushi” and at the in scale provides a preview of an emphasis on such a different mode centuries later.
Vocal music
In the poetry-oriented court life of Japan, secular vocal music would obviously be important. Many of the poems in classical collections seemed originally to have been song texts. One of the oldest secular song forms is saibara, which was first inspired by the singing of packtrain drivers. Among the new fads of Heian period vocal music (called collectively eikyoku) were rōei, songs based on Chinese poems or imitations of them, and imayō, contemporary songs in Japanese. Many gagaku melodies were given texts to become imayō songs, while others were derived from the style of hymns used by Buddhist missionaries. Little of those vocal traditions remains, but memories of their importance are preserved in nearly every novel and diary of the period. For larger surviving repertoires it is necessary to turn to religious music.
Shintō music
The indigenous religion of Japan, Shintō, was closely connected with the legendary legitimacy of the emperor. Thus, special Shintō music was devised for use in imperial shrines. In Japan such Shintō music is called kagura. The kind of music and ritual used exclusively in the imperial palace grounds is called mi-kagura; that in large Shintō shrines, o-kagura; and Shintō music for local shrines, sato-kagura. The suzu bell tree, mentioned before as among the earliest-known Japanese instruments, is found in all such events; and the equally ancient wagon zither can be heard in the palace rituals and sometimes in the larger shrines.
General Shintō chanting (norito) is rather straightforward, whereas the surviving music of mi-kagura is more complex. Male choruses singing in unison (all at the same pitch) are accompanied by the hichiriki double-reed, a kagura-bue flute, the wagon zither, and the periodic rhythmic markings of a pair of long, thin shaku byōshi clappers. The music for mi-kagura ceremonies is divided into two types: one to praise the spirits or seek their aid (torimono), the other to entertain the gods (saibari) in the tradition, mentioned earlier, of the mythological amusements given before the sun goddess. Perhaps the most-famous surviving dance suite from the Shintō tradition is Azuma asobi (The Entertainment of Eastern Japan), which can be seen as a courtly reflection of the agricultural base of Japan in its annual performances during the spring equinox and the summer solstice. The work is said to be an imitation of the dance of a heavenly maiden who performed on the beach of Suruga in the 6th century. Azuma asobi, along with bugaku dances, may be seen at many other imperial, national, and shrine occasions—dim but nevertheless impressive reflections of the colourful courtly life of the Japan of centuries ago.
Mi-kagura is exclusively a male event, but Shintō female dancers (miko) are found in other shrines. Historical documents show that the Heian court, like courts in ancient China or, for that matter, all over the world, appreciated the value of female dancers and their music. In later times the Heian-originated shirabyōshi female dancer-musicians became important elements in the transfer of courtly and religious traditions into later theatrical forms. Although the influence of Shintō music in the Japanese music traditions is evident, the major source of religious musical influence is found elsewhere, in the Buddhist temples.
Buddhist music
There are many forms of Buddhist hymns, such as saimon, as well as semireligious dance songs, such as goeika, nembutsu odori, and the bon odori performed at folk festivals. But the basis of Buddhist classical music, and hence the core of Buddhist influence on Japanese art music, is found in the theory and practice of chanting known generically as shōmyō. Such a tradition came originally from foreign Buddhist missionaries and next from Japanese converts studying in China. Noted sources from the many Japanese interpretations of that tradition are the Shōmyō yojinshu by Tanchi (1163–1237) of the Tendai sect and the Gyosan taikaishu (1496) of the Shingon sect. The theoretical bases of those studies are similar to the ones already discussed under the topic of gagaku.
Here need be added only comments about Buddhist notation systems. Most early chant notations used neumes, squigglelike signs that, like those of the early Christian traditions, served primarily as memory aids with which an initiate could recall the details of a given melody. The most influential system was the so-called go-in hakase, attributed to Kakui (b. 1236) of the Shingon sect. Under that method the five notes of each of three octaves of a pentatonic scale were indicated by the angle of a short line, rather like the hands on a clock. Variations of that method were of great influence in the notation of all vocal music of the period and continue to be used in Buddhist chant today.
