Develop musical pieces that conform to the specified format and include the suggested musical theme.
X:1
L:1/8
M:4/4
K:A
['AFEF AB c2 (3dcB cA BAFA AFEF']  
X:1
L:1/8
M:4/4
K:A
|: AFEF AB c2 | (3dcB cA BAFA | AFEF ABcd | efec (3BcB A2 :|  