Develop a musical piece using the given motif and adhere to the outlined structure.
X:1
L:1/8
M:4/4
K:D
['D B, A,4- A, A,']  
X:1
L:1/8
M:4/4
K:D
 z A, D/D/ E | F4- | F F/E/ D B, | A,4- | A, A, D C | D4- | D E/F/ G F | E4- | E E F G | A4- | 
 A G/F/ E D | F4- | F E D B, | A,4- | A, A, B,/ D E/ | D4- | D z z2 ||  