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:1/4=120
M:6/4
K:F
['A/B/ c2 c', 'd2 c d e f']  
X:1
L:1/4
Q:1/4=120
M:6/4
K:F
 A/B/ | c2 c f2 g | a (g2 g2) c | d (f2 f2) A | (G3 G2) A/B/ | c2 c d2 e | f (d2 d2) A | 
 (c3 c2) E | (F3 F2) || f/e/ | d2 d d2 c | d e f d3/2 c/ =B | c2 d e2 f | g3 e3/2 d/ c | 
 f2 g a g a | b a2 d2 c | d e f G2 F | (f3 f2) |]  