オフボーカル

noun

backing track; instrumental track

Wasei-eigo from 'off vocal'. Refers to a karaoke or music track with the main vocals removed, leaving only the instrumental backing.

wasei-eigo (Japanese-coined English), from off vocal

• カラオケでオフボーカルに合あわせて歌うたう。

  I sing along with the backing track at karaoke.

• この曲きょくのオフボーカル版ばんをダウンロードした。

  I downloaded the instrumental version of this song.