Create a musical composition based on the alphabetic representation of the predetermined pattern and the given melodic theme.
X:1
L:1/4
M:4/4
K:F
['B A']  
X:1
L:1/4
M:4/4
K:F
 F F F | B F G A | B2 z B | A B c d | c2 B2 | z B A B | c d c B/A/ | G G F2 | z c B A | G F G2 | 
 F4 | z |]  