Develop a musical composition centered around the provided motif while maintaining the appropriate form.
X:1
L:1/4
Q:1/4=160
M:4/4
K:Gmin
['B, B,']  
X:1
L:1/4
Q:1/4=160
M:4/4
K:Gmin
"G" F, G, G, G, | B, B,/C/ D2 |"D" C D D/C/ D |"G" C B, B, z | B, B,/D/C/D/ B, | B, B,/D/ C2 | 
"D" C D D/C/ D | C B, B, z |]  