Utilizing the provided musical theme and letter-based structure, compose a piece of music.
X:1
L:1/8
M:6/8
K:D
['c2 d', 'cBA ABc']  
X:1
L:1/8
M:6/8
K:D
 G2 g f2 e | d^cd edB | G2 B c2 ^c | d3- dAB | c2 d c2 d | cAF DFA |1 ded cdc | B3- B2 :|2 
 ded cBA | G3- G2 || A3 G3 | FAd fed | c2 e B2 c | BA^G A2 F/=G/ | A3 G3 | FAd fed |1 cBA ABc | 
 d3- d2 :|2 cBA ABc | d3 =cBA ||  