soundalike
Noun
Meaning
soundalike (plural soundalikes)
A sound, music recording, etc. that audibly resembles another.
Examples
Frito-Lay hired a Waits soundalike to sing a jingle similar to the song "Step Right Up" from the album Small Change, which is a song Waits has called "an indictment of advertising".
The continued survival of the show depended on audiences accepting another actor in the role, despite the bold decision that the replacement would not be a Hartnell lookalike or soundalike.