Actually, I'll just do Level 16 instead, to get this over with. Oh, and I know why you made the "same music" mistake on Level 19. You switched musics 18 and 21 around in the style.
The Lemming Tower of Pizza
Save 15/30
RR 1
Time: 1:30
Skills: 20 climbers, 10 bombers, 3 builders
Good: You have to know the right time to raise the release rate, so you can win this one.
Bad: It's frustrating timing those bombers. It would take many tries to succeed this level.