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
['AFFF DDFA z [Af][Ae][Af]{f}', 'ff(g/f/e) dAd=c B G2 (g a/g/fg)a abgb']  
X:1
L:1/8
M:2/2
K:D
 AFFF DDFA | z [Af][Ae][Af]{f} [Ag]2 (3([Ag]fe) | dzdB z [FA][FA][FA] | Ad[df]d e d2 B | 
 AFFF DDFA | z [Af][Ae][Af]{f} [Ag]>f (3([Ag]fe) | d>AdB z A[Dd]A |1 (af)da fd-dB :|2 
 (af)da f d2 |: a- | abag ff(g/f/e) | dAd=c B G2 (g | a/g/fg)a abgb | a2 fa g>e e2 | AFFF DDFA | 
 z [Af][Ae][Af]{f} [Ag]>f (3([Ag]fe) | d>AdB z A[Dd]A |1 (af)da fdf :|2 (af)da fd-dB |]  