Compose a piece of music using the specified alphabetical notation system and the provided theme.
X:1
L:1/8
M:2/4
K:D
['F>A BA de f2 fe/f/ gc', 'B/A/G F>A BA de f2 fe/f/ gc', 'ef/e/ ce', 'c/B/A ef/e/ ce fe a2 ef/e/ cB']  
X:1
L:1/8
M:2/4
K:D
 F>A BA | de f2 | fe/f/ gc | ed B/A/G || F>A BA | de f2 | fe/f/ gc | ed d2 :| ef/e/ ce | fe a2 | 
 ef/e/ ce | fe c/B/A || ef/e/ ce | fe a2 | ef/e/ cB | BA A2 :|  