Craft a musical composition by incorporating the provided motif and the alphabetical representation of the given sequence.
X:1
L:1/8
Q:1/8=140
M:4/4
K:G
['cBAG E2', 'G2 ef gfed efge agfe fgaf gfga']  
X:1
L:1/8
Q:1/8=140
M:4/4
K:G
 GA | BDEG cBAG | E2 DE G2 g2 | degd e4 d2 ef | gfed efgB | cBAG E2 (DE) | G2 g2 decd | B2 AG G2 :: 
 ef | gfed efge | agfe fgaf | gfga bgab | e4 d2 ga | bage degB | cBAG E2 DE | G2 g2 decd | 
 B2 AG G2 |]  