Craft a musical work based on the specified structure and given theme.
X:1
L:1/8
M:4/4
K:Amin
['B2 AG Bd e2 dBgB AG E2', 'eaag eg a2'  
X:1
L:1/8
M:4/4
K:Amin
|: B2 AG Bd e2 | dBgB AG E2 | G2 GE GABd | BAGA BA A2 :: eaag eg a2 | gage degd | eaag eg a2 | 
 gedB cA A2 :|  