Compose a piece of music that follows both the given musical theme and the letter-based structure provided.
X:1
L:1/8
M:4/4
K:Dmix
['(3AAA A>GF>G', 'D>d (3ddd']  
X:1
L:1/8
M:4/4
K:Dmix
 D>A (3AAA A>GF>G | A>GF>G A2 d2 | D>A (3AAA A>GF>G | A>G (3FED C2 G>E | D>A (3AAA A>GF>G | 
 A>df>e d>cA>B | c>A (3AAA A>GF>G | E>DC>E D4 :| D>d (3ddd d>ef>e | d>c (3BAG c2 B>c | 
 d>D (3DDD D>EF>G | A>G (3FED C2 G>E | D>d (3ddd d>ef>g | a>gf>e d>cA>B | c>A (3AAA A>GF>G | 
 E>DC>E D4 :|  