You Light Up My Life by Debby Boone. It was one of the biggest hit songs of the ‘70s. Did Debby ever have any big hits after that??
Gack! How about "These Boots Are Made for Walkin' by Nancy Sinatra...
If these two hadn't had famous fathers, neither one would've gotten even ONE hit.
Not a big hit, but my favorite Debbie Boone song:
https://www.youtube.com/watch?v=wJlN2wZ6DKk&index=16&list=PLNkhEZVNLqGgxD5f3p7cdalaDmC39iWrn
Be Ye Glad by Debby Boone