Tegotomono is the style of composition which has instrumental parts (here, it is also called "tegotomono-form") or the kind of songs in sankyoku music which consists of jiuta, so (or koto) music and kokyu (Chinese fiddle) music.
手事物(てごともの)は、三曲の音楽である地歌、箏曲、胡弓楽において、器楽部である手事を備えた楽曲形式(この場合『手事物形式』とも呼ぶ)、また曲種のこと。