Compose a piece adhering to the given musical structure and theme.
X:1
L:1/8
M:2/4
K:G
['g/f/e/d/ cc dd A2', 'e>d cB B2 f/f/f aa d/d/d ff'  
X:1
L:1/8
M:2/4
K:G
"^A""G" dB eB |"D7" dc/B/ cg | fc c>f |"G" eB B2 | dB"Em/G" eB |"D7" dc/B/ cg | fd b>a | 
"G" gg g z ::[K:D]"^B""A7" g/f/e/d/ cc |"D" dd A2 |"A7" ee !>!A2 |"D" ff !>!d2 |"A7" g/f/e/d/ cc | 
"D" dd A2 |"A7" eA a>c |"D" dd d"_> Teil  A" z ::[K:C]"^C""C" e/e/e gg | c/c/c ee | Gc e>d | 
"G7" cB B2 |"Dm" f/f/f aa |"Dm/F" d/d/d ff |"G7" Bd g>f |"C" ea g2 | e/e/e gg | c/c/c ee | Gc e>c | 
"Dm/F" BA A2 | f/e/d/^c/ df |"C" gg/f/ eg |"G7" ff/e/ dg |"C" cc c z |]  