Compose a piece of music following the given alphabetical representation of the musical structure and the provided motif.
X:1
L:1/8
M:6/8
K:G
['B2 G GAB', 'gag gdB']  
X:1
L:1/8
M:6/8
K:G
 c | B2 G GAB | c2 c c2 d |"^tr" B2 G GAB | A2 A A2 c | B2 G GAB | c2 d e2 g | edc BcA | G2 G G2 :: 
 f | gag gdB | c2 c c2 e | gag gdB | A2 A A2 f | gag gdB | c2 d e2 g | edc BcA | G2 G G2 :|  