Construct a musical piece utilizing the given sequence in alphabetical form and the supplied motif.
X:1
L:1/8
M:3/4
K:G
['D2 GA B2 z']  
X:1
L:1/8
M:3/4
K:G
 GGA | AG D2 GA | B2 z GFA | AF D2 GA | B2 z BBB | dB e2 Ac | BAGB | dB d2 Ac | B3 |]  