Assemble a piece of music by merging the alphabetic representation of the predetermined musical pattern and the provided melodic theme.
X:1
L:1/4
Q:3/4=90
M:6/4
K:D
['G F2', 'F D F E']  
X:1
L:1/4
Q:3/4=90
M:6/4
K:D
 A/4B/4c/ | d A G F2 E | D2 D D E F | E2 E E F G | F2 F F G A | B2 B B3/2 c/ B/A/ | ^G2 E A2 B | 
 c d e E2 ^G | A2 A A2 :: A | e2 e e3/2 f/e/d/ | c2 B A2 A | E F G A G A | F2 E D2 A | 
 d2 d d3/2 e/d/c/ | B2 G G2 B | e2 f g3/2 f/e/d/ | c3 g3 | f B f e A c | d2 d d2 A/G/ | 
 F D F E C E | F D F E A G | F3/2 E/ D A, G E | D2 D D2 :|  