Compose a piece of music that follows both the given musical theme and the letter-based structure provided.
X:1
L:1/8
Q:1/4=120
M:4/4
K:D
['defd gefd eA A/A/A', 'afdf a/g/f/e/ df eA A/A/A']  
X:1
L:1/8
Q:1/4=120
M:4/4
K:D
"^Allegro" e | defd gefd | eA A/A/A =c2 ce | defd gefd | eA A/A/A d2 d :: f | afdf a/g/f/e/ df | 
 eA A/A/A =c2 ce | afdf a/g/f/e/ df | eA A/A/A d2 d :|  