Gorillaz just keeps trickling out the jams from its very stacked album Humanz, due April 28 via Warner Bros. Pusha T and Mavis Staples feature on the psychedelic, yet sharp-edged "Let Me Out." So far, this is the most satisfying of all the guest-heavy collaborations released, the spirit of the downer-pop hit "Clint Eastwood" swirled into fervent soul.