Construct a music composition that complies with the designated structure and theme.
X:1
L:1/8
Q:1/4=120
M:6/8
K:Gmin
['', 'G>AG (GAc) (d2 =e f2) (e/f/) |1', 'fga b2 a{b} g2', 'a g>fd'  
X:1
L:1/8
Q:1/4=120
M:6/8
K:Gmin
"^Moderate""^A" |] G>AG (GAc) | (d2 =e f2) (e/f/) |1 d>cA A>G^F | (G2 F) D3 :|2 TdcA G2 G | 
 G3- G2 |]"^B" |: f | g>fd fga | b2 a{b} g2 |1 a | g>fd d>cA | (G2 F) D2 :|2 f | dgb a>g^f | 
 g3- g2 :|3 a | g>fd dcA | (G2 F) (D2"^->A2" ^F) |]  