Craft a musical piece that abides by the prescribed structural guidelines and the given theme.
X:1
L:1/8
M:6/8
K:C
['A2 A', 'A ^G>^FG'  
X:1
L:1/8
M:6/8
K:C
 A | E2 E A2 A | B2 G c2 c | d>ec B2 A | ^G>^FG A2 A | E2 E A2 A | B2 G c2 c | d>ec B2 A | 
 ^G>^FG A2 :: A | ^G>^FG A>GA | B>AB c2 c | d>ec B2 A | ^G>^FG A2 A | ^G>^FG A>GA | B/A/ c2 c | 
 d>ec B2 A | ^G>^F A3 :|  