Utilizing the provided musical theme and letter-based structure, compose a piece of music.
X:1
L:1/8
M:3/4
K:Ddor
['D>EFGAc ddd>efd c>AAGF>G F<D D3 C D>EFGAc', 'z A/c/d/e/ f2 e/g/f/e/ ddd>efd c>AAGF>G F<D']  
X:1
L:1/8
M:3/4
K:Ddor
 D>EFGAc | ddd>efd | c>AAGF>G | F<D D3 C | D>EFGAc | dd d2 d/e/f/d/ | e>d cB/A/ GA/F/ | DF F3 z || 
 A/c/d/e/ f2 e/g/f/e/ | ddd>efd | c>AAGF>G | F<D D3 C | D>EFGAc | dd d2 d/e/f/d/ | 
 e>d cB/A/ GA/F/ | DF F3 z ||  