Craft a musical composition by incorporating the provided motif and the alphabetical representation of the given sequence.
X:1
L:1/8
M:4/4
K:G
['D G<GG>B A>G E2 c<cc>e d>cB<g B<BB>G', 'e2 e>f (3gab (3agf']  
X:1
L:1/8
M:4/4
K:G
 D | G<GG>B A>G E2 | c<cc>e d>cB<g | B<BB>G c>AB>G | E>A G/F/E/D/ G2 G :| d | g2 d>g B>gd>f | 
 g2 b>g e2 e>f | (3gab (3agf (3efg (3dcB | (3cde (3def (3ged (3cBA | G<g d>g B>gd>f | 
 g<gb>g e2 e>f | (3gab (3agf (3gfe (3dcB | cde (3def g2 g<b |]  