That's Cher performing "Stars" (written by Janis Ian) from Cher's album of the same name. I have a very well worn copy of STARS -- on vinyl. The album was never released on CD. It's considered one of Cher's finest albums of the seventies. My own personal rankings:
1) 3514 JACKSON HIGHWAY (Cher's best 60s album)
2) STARS (Cher's best 70s album)
3) HEART OF STONE (Cher's best 80s album)
4) IT'S A MAN'S WORLD (Cher's best 90s album)
5) LIVING TRUTH (Cher's only album of the 00s)
6) CLOSER TO THE TRUTH (Chere's best 10's album)
From the YOUTUBE description:
Full album playlist: https://www.youtube.com/playlist?list... Out Now: For the very first time Cher's legendary album 'Stars' is available digitally on Cher's official YouTube channel - completely restored & remastered. Subscribe: https://bit.ly/3g0NXBm Follow Cher: Twitter: https://twitter.com/cher Facebook: https://www.facebook.com/cher Instagram: http://instagram.com/cher https://www.cher.com/