Create a musical composition based on the alphabetic representation of the predetermined pattern and the given melodic theme.
X:1
L:1/8
M:2/2
K:A
['EAcA eAcA', '|{b} agae']  
X:1
L:1/8
M:2/2
K:A
 EAcA eAcA | EAce dB B2 | EAcA eAcA | afed cABG | EAcA eAcA | EAce dBBg |{b} agae faec | 
 dBed cA A || | e |{b} agae fefg | afec dBBe |{b} agae faec | dBed cAAe |{b} agae faec | 
{e} dBcA BF F2 | EFED EFAB | cdBd cA A2 |]  