All musicals:
1. Awful mistake, dropping the article. (6)
2. Jamaica gently, without force somehow. (8, 4)
3. The bad bits are in second place. (4)
I can only find two musicals with the letters 8,4 Bloomer Girl and Anything Goes but I can’t see how they relate to the clue.
Wondered if no. 3 could be Aida