Utilizing the provided musical theme and letter-based structure, compose a piece of music.
X:1
L:1/8
Q:1/8=180
M:4/4
K:D
['', 'dB A2 FA Bc/d/AF DFAF E2 EB', 'ef gfef gbag |1 fedc defg :|2']  
X:1
L:1/8
Q:1/8=180
M:4/4
K:D
"^reel" dB |: A2 FA Bc/d/AF | DFAF E2 EB | AFAd BGBd |1 cABc dcdB :|2 cABc defg || a2 fd fafd | 
 eafd e2 ef | gfef gbag |1 fedc defg :|2 fedc dedB ||  