Compose a piece of music using the specified alphabetical notation system and the provided theme.
X:1
L:1/8
M:2/2
K:D
['FDFA d2 cA', 'edcB ABcd efge fage ed']  
X:1
L:1/8
M:2/2
K:D
 FDFA d2 cA | ABGA EFGE | FDFA d2 cA | (3ABc GE ED D2 :| f/g/f/e/fg fedf | efgf edcB | ABcd efge | 
 fage ed d2 | f/g/f/e/fg fedf | edef edcB | ABcd efge | fage ed d2 ||  