Craft a musical composition that incorporates the supplied alphabet sequence and motif.
X:1
L:1/8
M:4/4
K:C
['(3(GAB) (cB)cd (cd)ef (g^f)ga (ge)dc (AG)AB (cd)cA', 'c2 (gf) egcg egcg dgBg dgBg ceAe']  
X:1
L:1/8
M:4/4
K:C
 (3(GAB) | (cB)cd (cd)ef | (g^f)ga (ge)dc | (AG)AB (cd)cA | (GE)cA (GE)CE | (FE)FG (AG)AB | 
 (cB)cd (eg)ag | (fe)dc (Ac)Bd | edcB c2 :: (gf) | egcg egcg | dgBg dgBg | ceAe ceAe | GcEc GcEc | 
 (FE)FG (AG)AB | (cB)cd (eg)ag | (fe)dc (Ac)Bd | edcB c2 :|  