Compose a piece adhering to the given musical structure and theme.
X:1
L:1/8
M:4/4
K:D
['A2 FA', 'D2 fa (3aaa afdf afef dB B2'  
X:1
L:1/8
M:4/4
K:D
 A2 FA df f2 | dfec dBBd | A2 FA dfec | dBAF AD D2 :: fa (3aaa afdf | afef dB B2 | fb (3bbb bafa | 
 bfaf fe e2 | bf f2 afef | gfec dBBD | A2 FA dfec | dBAF AD D2 :|  