Yes it’s true!
Maurice White the founder of the world famous group Earth, Wind & Fire who passed away at the age of 74 (on Feb.5th 2016) was involved in anime in the 90s.
Maurice White produced other albums outside of Earth, Wind & Fire, including the soundtrack to Tatsunoko Production Company’s Gatchaman OVA series. The music was composed for the OVA by Maurice White and Bill Meyers, with additional music by Bob Sakuma from the original TV series. One of the memorable songs from the album, “Let’s Fly”, was composed by White.
Enjoy the song.