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
["dcde defg a2 ab afed d'2 afde"]  
X:1
L:1/8
M:4/4
K:D
|:"D" dcde defg |"D/F#" a2 ab afed |"G" d'2 bd'"D/F#" afde |"E7" fdef"A" ecBA |"D" dcde defg | 
"D/F#" a2 ab afed |"G" d'2 bd'"D/F#" afde |1"A" fdec"D" d2 z A :|2"A" fdec"D" d f2 e |]  