Construct a musical piece that follows the designated lettered structure and integrates the provided motif throughout.
X:1
L:1/4
Q:1/8=120
M:3/4
K:Amin
['d c', 'c B']  
X:1
L:1/4
Q:1/8=120
M:3/4
K:Amin
"^moderate" c/B/ | A3/2 B/ A | A G E | c3 | d c d |"^5" e3/2 d/ c | c d e | G3- | G c3/2 B/ | 
"^9" A3/2 B/ A | A G E | c3 | d c d |"^13" e f e | d c B | A3- | A2 || e |"^17" e c e | g e c | 
 B G2- | G d e |"^21" f e d | c d e | G3- | G c B |"^25" A3/2 B/ A | A G E | c3 | d c d | 
"^29" e f e | d c B | A3- | A2 |]  