Develop musical pieces that conform to the specified format and include the suggested musical theme.
X:1
L:1/8
M:4/4
K:C
['c2 A', 'e2 d'  
X:1
L:1/8
M:4/4
K:C
[M:6/8][K:A] .abc e | c2 A ABA | agf e2 d | c2 A ABc | d2 c Bcd | c2 A ABA | agf e2 d | c2 A BGB | 
 A3 A2 :: e | A2 B c2 d | efe e3 | d2 B Bcd | e2 d cBA | f2 g agf | e2 d c2 a | c2 A BGB | A3 A2 :|  