2: Get into the archeology scene. (3)
3: Everything, including meat, in stew is nutritious (9)
4: Flower, large one, set up outside (5)
5: Capone frequently gets high (5)
8: Approve a constant beast (5)
9: Measure of heat in the empty room (5)
11: 4-down Arias hit high note in some of the lungs (3,3)
12: Man, what an avant-garde US artist! (3)