Utilizing the provided musical theme and letter-based structure, compose a piece of music.
X:1
L:1/8
M:4/4
K:A
['A2 A2 Acec defg agaf', 'e2 (ce) (Ae)(ce)']  
X:1
L:1/8
M:4/4
K:A
 E2 | A2 A2 Acec | defg agaf | ecAc ecAc | dBGB dBGB | A2 A2 Acec | defg agaf | eagf edcB | 
 A2 A2 A2 :: cd | e2 (ce) (Ae)(ce) | f2 (df) (Bf)(df) | e2 (ce) (Ae)(ce) | (EB)(GB) (EB)(GB) | 
 e2 (ce) (Ae)(ce) | defg agaf | eagf edcB | A2 A2 A2 :|  