Compose a piece of music that follows both the given musical theme and the letter-based structure provided.
X:1
L:1/8
Q:1/8=180
M:4/4
K:D
['EA, A,2', 'dfaf edcd efge']  
X:1
L:1/8
Q:1/8=180
M:4/4
K:D
 F3 E DFAF | EA, A,2 EA, A,2 | F3 E DEFA | (3Bcd ec dcBA | FAFE DFAF | EA, A,2 EA, A,2 | 
 F3 E DEFA | (3Bcd eg fdd || e | fddA dfaf | edcd efge | fddA dfaf | (3fga eg fdde | fddc dfaf | 
 edcd efge | dfaf g2 bg | (3fga ec dcBA ||  