Compose a piece of music that follows both the given musical theme and the letter-based structure provided.
X:1
L:1/8
M:2/2
K:Dmix
['A2 dB', 'ed d2', 'd2 (3B^cd']  
X:1
L:1/8
M:2/2
K:Dmix
 (3ABA ^GB A2 dB | cBcG EFGB | (3ABA ^GB A2 dB | (3ABc GE{F} ED D2 | AD (3FED A2 dB | cBcG EFGB | 
 AFAc BGBd | cAGE{F} ED D2 || ed d2 ABcd | ed d2 ea{b} ag | e2 dg ecdc | AcGc Ad d2 | e2 dg edd>c | 
 ABcd efge | a2 ge dgec | ABcd ed d2 || efge d2 (3B^cd | ea{b}ag ed^cd | efge dged | 
 cAGE{F} ED D2 | gage d2 (3B^cd | ea{b}a^g a=gef | ged^c dged | cAGE D2 z2 ||  