Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/4
M:3/4
K:none
['c2 a', 'g/ g g', 'A/ A']  
X:1
L:1/4
M:3/4
K:none
[K:D] A/A/ | A2 f | d2 a | c2 a | g f e | A2 g | c2 a | d2 a | f z A/A/ | A2 f | d2 a | c2 a | 
 g f e | A2 g | c2 a | d3/2 d/ d | d z z || A3/2 f/ f | f e d | c3/2 g/ g | g z c/B/ | A3/2 g/ g | 
 g f e | d3/2 f/ f | f z c/B/ | A3/2 f/ f | f e d | c3/2 g/ g | g z c/B/ | A3/2 g/ g | g f e | 
 d3/2 d/ d | d z (3A/B/c/ || d c B | A G F | G3/2 A/ A | c2 A | G3/2 A/ A | c2 A | F3/2 A/ A | 
 d2 (3A/B/c/ | d c B | A G F | G3/2 A/ A | c2 A | G3/2 A/ A | c A A/c/ | d3/2 d/ d | d z z |]  