Create a musical composition based on the alphabetic representation of the predetermined pattern and the given melodic theme.
X:1
L:1/8
M:2/4
K:F
['FF GA f>edc d>c', 'd<f c<A c2']  
X:1
L:1/8
M:2/4
K:F
 c>A | FF GA | f>edc | d>c d/e/f | g>f g/<a/ z | FF GA | f>edc | d>c de | f2 z :: c | f<a g<f | 
 d<f c<A | c2 ba | g2 c'>b | a<c' a<f | d<f c<A | c2 de | f2 :|  