1: Opposed to commercial lyrics. . . (7)
5: Siphon windy painter? (5)
8: Larvae can appear to contain cure-all (7)
9: Twister: Rent a Party! (7)
11: Cooped up in Essex: pelicans, it would turn out (5)
14: Preconceived opinion about the crud jeep I dismantled (9)
16: Essentially, what boy is wearing (3,2)
18: Lily Tomlin character inside her nest in Ecuador (9)
19: They can't reproduce sounds like an operating system (7)
21: First significant battle with many bees. (5)
23: A teetotaller in an imitation coat wielding a pick-axe (7)
24: First cryptic?! I nail it! (7)
26: Very loud intrusion spoiled its cross words (5)
27: Mrs. Roosevelt East, Trim, Oregon (7)