Design a music composition that employs the provided motif and follows the predetermined musical form.
X:1
L:1/8
M:4/4
K:Gmin
['dd c2 B2', 'z B', 'c _B2 A^F'  
X:1
L:1/8
M:4/4
K:Gmin
 G2 | dd c2 B2 z c | BB A2 G2 z B | dd c2 B2 z d | c2 BB A2 z D |[K:Gmix] GG A2 BB z A | 
 G>ABc d2 z d | d2 dd ed z c | BB A2 G2 ||[K:Gmin] G2 | dd c2 B2 z c | BB A2 G2 z B | 
 dd c2 B2 z c | G2 ^F2 G2 z2 ||[K:Gmix] G2 A2 B2 z B | G>AB>c d2 z d | d2 dd_ed z c | _B2 A^F G4 ||  