On Glen's résumé: hit songwriter, Facebook dominator, and member of Styx.
John Doe of X
With his X-wife Exene, John fronts the band X and writes their songs.
Angelo Moore of Fishbone
Fishbone has always enjoyed much more acclaim than popularity. Angelo might know why.
Allen Toussaint - "Southern Nights"
A song he wrote and recorded from "sheer spiritual inspiration," Allen's didn't think "Southern Nights" had hit potential until Glen Campbell took it to #1 two years later.