Craft a musical composition that incorporates the supplied alphabet sequence and motif.
X:1
L:1/8
M:2/4
K:A
['G F']  
X:1
L:1/8
M:2/4
K:A
 B2 B2 | B2 e2 | d2 c e | B4 | c2 c2 | B2 c B | A2 G F | E2 z2 | B3 A | B3 c | e A G F | E3 B | 
 A2 G F | E F E B, | E2 z2 |]  