Create a composition following the given musical structure and theme.
X:1
L:1/8
Q:1/4=180
M:2/2
K:Cmin
['sig. 2/3 in f4 a4 ga b2', 'c2 f3 g f2 c2 _d2 B2'  
X:1
L:1/8
Q:1/4=180
M:2/2
K:Cmin
"_Time sig. 2/3 in ms" f4 a4 | ga b2 =e2 g2 | f4 c2 B2 | AB c2 F2 c2 :: f3 g f2 c2 | _d2 B2 e2 c2 | 
 _d3 e fe_dc | B4 A4 | (GF)(GA) B2 G2 | (=ED)(EF) G2 =e2 | f3 c (_dB)(cG) G4 F4 |]  