Using the provided alphabet sequence and motif, develop a unique musical composition.
X:1
L:1/8
M:2/2
K:A
['cBAa (3(fga) ec dfec', '(3(cBA) (eA) fAeA']  
X:1
L:1/8
M:2/2
K:A
 (ed) | cBAa (3(fga) ec | dfec B2 (Bd) | cBAa (3(fga) ec | dfec A2 (Ad) | cBAa (3(fga)(ec) | 
 dfec B2 (Bd) | cefg agbg | afed cAAd || (3(cBA) (ec) fAeA | (3(cBA) (ec) B2 (Bd) | 
 (3(cBA) (eA) fAeA | dfed cAAd | (3(cBA) (eA) fAeA | dfec B2 (Bd) | cefg agbg | afec A2 |]  