Using the provided alphabet sequence and motif, develop a unique musical composition.
X:1
L:1/8
Q:3/8=100
M:6/8
K:G
['GAB c2', 'def gag fdB']  
X:1
L:1/8
Q:3/8=100
M:6/8
K:G
|: GAB c2 A | B2 G AFD | GAB c2 e | dcB A3 | GAB c2 A | B2 G AFD | E3 GAB | cAF G3 :: GAB c2 A | 
 def g3 | def gag | fdB c2 e | def gag | fdB cAF | E3 GAB | cAF G3 :|  