Sweet Substitute is an English all girl trio, specializing in jazz and swing harmony recordings, including a cappella.

The trio were founded in 1975, when English folk musician Andy Leggett (see Pigsty Hill Light Orchestra) met singer Teri Penfold (his future wife) at a party and suggested that she should contact Angie Masterton and Eiri Thrasher to form a singing trio.

[1] Eiri left the group and was replaced by Sammi Brown (real name Chris Price).

They carried on recording swing type material in four more albums, despite Decca wanting them to change direction.

Chris Price then decided to leave the trio with Kate McNab taking her place.