instrumental piece; instrumental track
Common abbreviation of インストゥルメンタル曲, used in music contexts to refer to a song or track without vocals.
See also: 器楽曲 · インストゥルメンタル
This album contains three instrumental tracks.
His new song is an instrumental piece and has no lyrics.
Abbreviation of インストゥルメンタル (instrumental) + 曲 (song/piece). The word インストゥルメンタル is a loanword from English.