Compose a piece of music that follows both the given musical theme and the letter-based structure provided.
X:1
L:1/8
M:3/4
K:D
['d2 d2', '(gf)efge (fe)defd (ed)cdec']  
X:1
L:1/8
M:3/4
K:D
 (uA>f) | d2 d2 (A>f) | d2 d2 (A>f) | e2 a2 a2 | f2 d2 (A>f) | d2 d2 (Af) | d2 d2 (A>f) | 
 e2 a2 a2 | d4 :: (e>f) | (gf)efge | (fe)defd | (ed)cdec | (de)fgaf | (gf)efge | (fe)defd | 
 (ed)cdec | d4 :|  