1: Creature of habit goes in to pay upon receipt of drink? It's puzzling. (9)
2: For motivation we are led by a Demon and Frog. (7)
3: Drunk stops to heave (7)
4: Sounds like everything: a bore (3)
5: Tutus can serve to conceal Donatello, Leonardo, Michelangelo, and Raphael, say (7)
6: Imposing put our nose out of joint (7)
8: Cat, or what it does having lost its head (5)
13: Former name for joint audition (3)
16: Weights laced with silver ring, forms of graphite (9)
18: Dawn is close, with a new beginning (7)
19: One hero, perhaps! (7)
20: Vessel in swell exit (7)
21: Half disapprove of old king (3)
22: Ask for bit of bread with melted cheese (7)
23: Daring time to ship (7)
24: City that cowboys used to avoid (5)
27: It comes to a point everyone heard (3)