noun
Refers to a traditional Japanese ensemble of three instruments, typically shamisen, koto, and shakuhachi or kokyū. Also used for the genre of music played by such an ensemble.
彼女は三曲の演奏会で琴を弾いた。
She played the koto at a sankyoku concert.
三曲合奏は江戸時代に盛んになった。
Sankyoku ensemble music flourished in the Edo period.