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
['G>FG>B d>Bg>f (3efe c>e d>BG>B (3cec A>c', "B>c d>^cd>f a>fd>f a>bc'>b a>gf>e d>ef>g a>bc'>b"]  
X:1
L:1/8
M:4/4
K:G
|: D2 |{A} G>FG>B d>Bg>f | (3efe c>e d>BG>B | (3cec A>c (3BdB G>A | F>Ad>^c e>d=c>A | 
 G>FG>B d>Bg>f | (3efe c>e d>BG>B | (3cec A>c (3BdB G>B | (3ABA F>A G3/2 z/ :: B>c | 
{e} d>^cd>f a>fd>f | a>bc'>b a>gf>e | d>ef>g a>bc'>b | (3aba (3gfe (3ded (3cBA | G>FG>B d>Bg>f | 
 (3efe c>e d>BG>B | (3cec A>c (3BdB G>B | (3ABA F>A G3/2 z/ :|  