Construct a music composition that complies with the designated structure and theme.
X:1
L:1/8
M:6/8
K:G
['B2 B BAG c2 c cBA d2', 'd2 d'  
X:1
L:1/8
M:6/8
K:G
|: B2 B BAG | c2 c cBA | d2 d dcB | AGA B2 G | B2 B BAG | c2 c cBA | d2 d dcB | AGF G3 :| B/c/ | 
 d2 d gBc | d2 d gBc | d2 d g2 f | efd ^cBA | f2 f fed | g2 g fed | a2 a agf | ed^c d2 |]  