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:6/8
K:Dmix
['f2 d d^cd']  
X:1
L:1/8
M:6/8
K:Dmix
"D" d^cd A2 G | F2 D DED |"C" EDE c2 E | E2 D D2 A |"D" dcB c2 A | BAG A2 G |"C" EDE c2 E |1 
"D" E2 D D2 A :|2"D" E2 D D2 e |]:"D" f2 d d^cd | f2 d d^cd |"C" edB =c2 d | ede age |1 
"D" f2 d d^cd | f2 d d^cd |"C" ede"A" age | ed^c"D" d2 e :|2"D" f3"G" gfg |"D" agf"G" g3 | 
"D" fed eag |"A" ed^c"D" d2 A |]  