- Heaven Knows
- Heaven Knows by The Grass Roots was played on tour Flower Power Concert Series in 1 out of 1 shows, with a probability of 100% to listen to it live on this tour since its debut at America Gardens Theatre on April 12, 2008, until his latest show at America Gardens Theatre on April 12, 2008
- Tour
- Flower Power Concert Series
- Artist
- The Grass Roots
- Released
- November 1, 1969