Question: Wayman Tisdale was an American professional basketball player in the NBA, and jazz bass guitarist, in 2008, which record label founded by multiple-Grammy Award nominee, Dave Koz, released previously unreleased music by who? 
Sentence (from "Unheard Music Series"): An initial blurb from the label's website stated: "Drawing from radio archives, private tapes, collections of rare vinyl, and all sorts of unreleased sessions, often working hand-in-hand with the artists themselves, the series will focus on filling gaps in the historical record and illuminating otherwise dark corners of the musical continuum."
Relevant evidence: No