Compose a piece of music following the given alphabetical representation of the musical structure and the provided motif.
X:1
L:1/8
M:4/4
K:G
['B2 BA BGEF', 'Bdef gfeg fedf']  
X:1
L:1/8
M:4/4
K:G
 dc | B2 BA BGEF | Bdef gedc | B2 BA BGEF | GBAB G2 :| dc | Bdef gfeg | fedf edBA | Bdef gfeg | 
 fedf e2 ed | Bdef gfeg | fedf edBd | gfgd edBe | dBAB G2 ||  