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:none
['gf/e/ dd Bd ed gf/e/ d>d']  
X:1
L:1/8
M:2/4
K:none
[K:G]"G" gf/e/ dd | Bd ed | gf/e/ d>d |"D7" cd"G" B2 | gf/e/ dd | Bd ed | gf/e/ d>d | 
"D7" f>d"G" g z |]  