Construct a musical piece that follows the designated lettered structure and integrates the provided motif throughout.
X:1
L:1/4
M:3/4
K:Gmin
['G G3/2 A/ B A2 G A3/2', 'z2 F A2 B c2 B G3/2']  
X:1
L:1/4
M:3/4
K:Gmin
 G | G3/2 A/ B | A2 G | A3/2 B/ c | d2 d | c2 A | B G2 | F3- | F3 | z2 || F | A2 B | c2 B | 
 G3/2 A/ B | A2 G | F D F | G A2 | G3 ||  