Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/16
M:2/4
K:D
['d4 agfe d2AG F2E2 D2A2B2c2 d4 e4', 'c2F2 F2fe']  
X:1
L:1/16
M:2/4
K:D
 d4 agfe | d2AG F2E2 | D2A2B2c2 | d4 e4 | f2d2 d2ef | e2A2A2e2 | f2d2 defd | e2A2A2e2 | f4 ^g4 | 
 a2^gf e2d2 | c4 B4 | A2AA AcB^G | A4 A,4 :: e4 e4 | edcB A2gf | d2B2 B2cd | c2F2 F2fe | 
 d2B2 BcdB | c2F2 F2fe | d4 c4 | B8 | A4 B4 A6 A2 | d2fa gfge | fgaf d2fa | g2e2 efge | 
 f2d2d2 (3fga | g2e2 efge | f2e2 efge | f2d2d2A2 | BcdB cdec | defd efge | fgab fedc | d2dd dfec | 
 d4 D4 :|  