Construct a music composition that complies with the designated structure and theme.
X:1
L:1/16
M:2/4
K:A
['cBAc BAGB Aaga fecA', 'eaga eaga'  
X:1
L:1/16
M:2/4
K:A
 (ed) | cBAc BAGB | Aaga fecA | GBEB Bcdf | edcd B2(ed) | cBAc BAGB | Aaga fecA | GABc defg | 
 a2A2 A2 :: (cd) | eaga eaga | eaga fecA | GABc dcde | fedc B2(cd) | eaga eaga | eaga fecA | 
 GABc defg | a2A2 A2 :|  