What was the most popular song from the second Van Halen album to feature vocalist Sammy Hagar?
When It's Love: "When It's Love" is a power ballad by the American rock band Van Halen. When It's Love:  It was released as a single from their album "OU812". When It's Love:  It was the most popular song from that album, hitting #1 on the "Billboard" Mainstream Rock charts and #5 on the "Billboard" Hot 100 chart. OU812: OU812 (pronounced "Oh You Ate One Too") is the eighth studio album by American hard rock band Van Halen, released in 1988, and the second to feature vocalist Sammy Hagar.
When It's Love