Design a musical composition incorporating the alphabetic expression of the chosen structure and the provided melodic theme.
X:1
L:1/8
M:4/4
K:Amin
['eaed cBAc', 'EA(3AAA cBAc']  
X:1
L:1/8
M:4/4
K:Amin
 eaed cBAc | BAGE GAcd | eaed cBAc | BAGB A4 :| EA(3AAA cBAc | BG(3GGG DG(3GGG | EA(3AAA cBAc | 
 BA!fermata!B A4 | EA(3AAA cBAc | BG(3GGG DG(3GGG | eaed cBAc | BAGB A4 ||  