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:D
['E (F E) D']  
X:1
L:1/4
M:3/4
K:D
 A | (A D) E | (F E) D | D B, C | A,2 (F/A/) | (A3/2 G/) F | G A B | A2 A | G A B/ B/ | =c B A | 
 A D E | (F E) D | (G A) (B/G/) | A2 G/ G/ | A3/2 B/ A | A E F | D2 ||  