Assemble a piece of music by merging the alphabetic representation of the predetermined musical pattern and the provided melodic theme.
X:1
L:1/8
M:4/4
K:D
['A2 eA Acec ABcd e2 dB', 'A2 a2 ea ageg agbg agef gedc']  
X:1
L:1/8
M:4/4
K:D
 A2 eA Acec | ABcd e2 dB | G2 dB eBdB | GBdB GBdB | A2 eA Acec | ABcd e2 dB | ABcd edB/c/d | 
 eage BA A2 :: a2 ea ageg | agbg agef | gedc BG G2 | g2 ga bged | edeg a2 ga | bgaa ge d2 | 
 dBde g2 ge | dBGA BA A2 :|  