Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
M:6/8
K:D
['', 'f2 d', 'A F2 A d2 c |1,3 B2', 'd cde A2 G :|2,4 Bed cBc']  
X:1
L:1/8
M:6/8
K:D
 A |: d2 d f2 f | a2 a f2 d | g2 e f2 d |1,3 cde ABc :|2,4 ABc d2 :: A |: F2 A E2 A | 
 F2 A d2 c |1,3 B2 d A2 d | cde A2 G :|2,4 Bed cBc | d3 d2 :|  