i need your knowledge and help to find who it is....

here is the song

https://www.zshare.net/audio/54095855974b6b98/

It's "Keep On Playing The Music " by Mystique on Curtom (1977)

I have it on a 12" single with the wonderful "If You're In Need" on it.

Both tracks are on the 'B' side of "What Would The World Be Like Without Music"

https://cgi.ebay.co.uk/MYSTIQUE-KEEP-ON-PLA...A1%7C240%3A1318