Develop a musical composition using the alphabetic representation of the specified sequence and incorporating the given motif.
X:1
L:1/8
M:4/4
K:Amix
['G EAAc BGGB cA (3Bcd eddg eAAc', 'efec dedB']  
X:1
L:1/8
M:4/4
K:Amix
 G | EAAc BGGB | cA (3Bcd eddg | eAAc BGGB | cABG A2 Ad :| efec dedB | cA (3Bcd eddg | efec dedB | 
 cABG A2 Ad | efec dedB | cA (3Bcd eddg | eAAc BGGB | cABG ACED ||  