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
Q:3/8=100
M:3/8
K:F
['F2 z F GGG B']  
X:1
L:1/8
Q:3/8=100
M:3/8
K:F
|: c2 c | cdc | BAB | BAB | c3 | c2 c | cdc | BAc | BAG | F3 |[M:2/4][Q:1/2=120] F2 z F | GGG B | 
 A3 G | FFF E | F2 z F | GGG B | A2 A G | FFF E | F2 z2 |[M:3/8][Q:3/8=100] A2 c | BAG | F3 | 
 A2 B | cdc | BAc | BAG | F3 :|  