"What Is Love" was the final single from En Vogue's second album, Funky Divas. The song was not released commercially, but was instead shipped to dance clubs across the United States. "What Is Love" reached the Top 10 of the US dance charts. The song appeared again in 1993 as part of the group's Runaway LoveEP.
This was the only song En Vogue produced for market featuring Maxine Jones and Cindy Herron sharing lead vocals. It was initially to be included on Remix to Sing as a new song, but missed the production deadline and was added to Funky Divas.