demo recording; demo track
Used in music contexts for a preliminary recording made to showcase a song or artist, often for promotional or audition purposes.
See also: デモテープ
バンドは新しいデモ音源をレコード会社に送った。
The band sent their new demo recording to the record label.
このデモ音源はまだミックス前のラフなものです。
This demo track is still a rough mix before final production.
Compound of デモ (demo, from English 'demo') and 音源 (sound source/recording).