Compose a musical piece in accordance with the outlined theme and structure.
X:1
L:1/8
Q:1/2=70
M:2/4
K:G
['g/f/g/a/ gB', 'd4 d/c/d/e/ db cBca B/A/B/c/ Bg AG'  
X:1
L:1/8
Q:1/2=70
M:2/4
K:G
 g/f/g/a/ gB | AF c2 | BG c2 | B/G/A/B/ c/d/e/f/ | g/f/g/a/ gB | AG ag | f2"^tr" e2 | d4 :: 
 d/c/d/e/ db | cBca | B/A/B/c/ Bg | AG Af | G/A/B/c/ dG | edgc | B2"^tr" A2 | G4"^*" :|  