Craft a musical piece that abides by the prescribed structural guidelines and the given theme.
X:1
L:1/4
M:3/4
K:F
['G A']  
X:1
L:1/4
M:3/4
K:F
 C | F F G | A F c/c/ | =B c d | c2 c | G A =B | c2 A/B/ | c c d | c3/2 B/ A | B A G | A G F | 
 G2 c/>B/ | A2 G | F2 |]  