Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
M:4/4
K:D
['A3 B AF F2 ABdf ed{Bd}BA FA', 'D2 fedc defg afbf afeg fded fded']  
X:1
L:1/8
M:4/4
K:D
|: A3 B AF F2 | ABdf ed{Bd}BA | FA A2 BFAF | EFGE FD D2 :| fedc defg | afbf afeg | fded fded | 
 BdAF E3 g | fedc defa | bfaf gfea | f3 a e3 f | dfaf efdB ||  