A classier variation on the classic bubble goose jacket, leather goose finally gets its own theme song on the latest leak off Planet Asia and Doo Wop‘s forthcoming street album. On Leather Goose Muzik, Twiz The Beat Pro‘s eclectic sample work sets the mood as the Golden State underground stalwarts trade braggadocious, self-assured verses. The official prelude to Planet Asia’s Black Belt Theater LP (dropping February 28 via Wandering Worx Ent. / Nature Sounds), The Arrival has yet to receive a drop date; keep it locked for the latest details. In the meantime, why not check out Asia’s verse on Black Spaceships, a record released as part of last year’s Booth-exclusive 20/20 Music Series?