Create a musical composition based on the alphabetic representation of the predetermined pattern and the given melodic theme.
X:1
L:1/16
M:2/4
K:C
['', '=ef2f f_edc']  
X:1
L:1/16
M:2/4
K:C
 G2 |:"C" ^fgec d2dc | dcec d2dc | ^fgec d2dc |1,3 dcec dcG2 :|2,4"G7" dedB"C" c2 z2 :: 
"Fm" ef2f f_edc | =ef2f f_edc |1,3 =ef2f f_edc |"G" ^fgag f_edc :|2,4"G" ^fgag f_edB | 
"C" cG"G7"AB"C" c2 z2 :|  