Develop a musical piece using the given theme and incorporating the letter-based structure provided.
X:1
L:1/8
Q:1/4=120
M:2/4
K:A
['c>BAA AABA c>BAA', 'z c>dee f>gaA c>dee', 'B2 e/c/e/c/ A/A/B/c/ d/B/d/B/ A/G/F/E/ A/B/c/d/ e/f/g/a/']  
X:1
L:1/8
Q:1/4=120
M:2/4
K:A
 c>BAA | AABA | c>BAA | AEA z :: c>dee | f>gaA | c>dee | f/e/d/c/ B2 :: e/c/e/c/ A/A/B/c/ | 
 d/B/d/B/ A/G/F/E/ | A/B/c/d/ e/f/g/a/ | cB A2 :|  