Create a composition using the letter notation of the specified musical motif and the provided melodic theme.
X:1
L:1/16
M:2/2
K:C
['G2GA GECE F2AG ABcA G2GA GEC z/', 'e2ec f2fd']  
X:1
L:1/16
M:2/2
K:C
 G2GA GECE | F2AG ABcA | G2GA GEC z/ | fedc A2c2 :: e2ec f2fd | e2ec dBGB | e2ec f2fd | 
 gedc A2c2 |]  