Question: Name the songwriter from San Francisco who operates the Art of Ears Studio and who worked with the lead vocalist for the hip hop group Digital Underground?
Sentence (from "Sons of the P"): The album featured two hit singles, "No Nose Job" and "Kiss You Back", both of which were written by, and featured the lead vocals of Greg Jacobs (a.k.a. Shock G/Humpty Hump), and the latter of which featured multi-layered choruses and background vocals sung by Boni Boyer, who briefly worked with D.U. shortly after her stint with Prince's Sign of the Times/Love Sexy band.
Relevant evidence: No