Craft a musical piece in accordance with the designated structure and theme.
X:1
L:1/8
M:2/2
K:A
['c2 BA (G/A/B)', 'aAaA aA', 'A2 fedc E2 fefg aA'  
X:1
L:1/8
M:2/2
K:A
 c2 BA (G/A/B) ED | CEAc | BE E2 | c2 BA (G/A/B) Ed | (c/d/e) EB cA A2 :: aAaA aA A2 | 
 (G/A/B)"^tr" B2 (G/A/B)"^tr" B2 | aAaA aA AB | c2 BA EA A2 :: ce"^tr"fe ce"^tr"fe | 
 fedc BE"^tr" E2 | ce"^tr"fe ce"^tr"fe | fefg aA A2 :|  