Craft a musical piece that abides by the prescribed structural guidelines and the given theme.
X:1
L:1/8
M:6/8
K:A
['c>AA B>AA', 'A A>BA e>fe fga ecA'  
X:1
L:1/8
M:6/8
K:A
 F/e/ | c>AA B>AA | c>AA B>AA | fec ABc | B>BB B2 f/e/ | c>AA B>AA | c>AA B>AA | fga efe | 
 e>cA A2 :: A | A>BA e>fe | fga ecA | A>BA ef=g | (f/=g/a)f e2 A | A>BA e>fe | fga ecA | Ace fga | 
 fbg a2 :|  