Construct a musical piece that follows the designated lettered structure and integrates the provided motif throughout.
X:1
L:1/8
Q:1/4=140
M:2/4
K:Gmin
['B/c/ d B2 d c A2 c', 'g2 f']  
X:1
L:1/8
Q:1/4=140
M:2/4
K:Gmin
 B/c/ | d B2 d | c A2 c | B G2 B | A^F D2 | GABc | BAG^F | G2 G2 | G3 :: B/c/ | d b2 a | a g2 f | 
 f g2 f | f2 gA | B2 cd | e2 fg | fdcB | A2 F2 | B A2 c | c B2 d | d c2 e | ^F2 D2 | GABc | BAG^F | 
 G2 G2 G3 :|  