Craft a music piece according to the prescribed structure and the input theme.
X:1
L:1/8
M:4/4
K:C
['G>AG>F E2 E2 A2', 'ABcA BcdB'  
X:1
L:1/8
M:4/4
K:C
 G>AG>F E2 E2 | A2 A2 G4 | AB c2 Bc d2 | egfe e2 d2 | G>AG>F E2 E2 | A2 A>B G2 G2 | ABcA Bcdf | 
 e2 [Ec]2 [Ec]2 z2 :: e3 e fedc | c2 c>d{c} B2 AG | ABcA BcdB | cdef e2 d2 | G>AG>F E2 E2 | 
 A2 A>B G2 G2 | ABcA BcdB | e2 [Ec]2 [Ec]2 :|  