Conversation so far:
When was You Light up My Life?
Boone released her first solo effort, "You Light Up My Life" (which had been featured in the film of the same name) in 1977.
Did it win any awards?
The song earned Boone a Grammy Award for Best New Artist and an American Music Award for Favorite Pop Single of 1977.

Question: Was it a top 100 song?
Self-contained rewrite: Was You Light up My Life sung by Debby Boone a top 100 song?