Construct a musical piece utilizing the given sequence in alphabetical form and the supplied motif.
X:1
L:1/4
M:4/4
K:G
['B B']  
X:1
L:1/4
M:4/4
K:G
 D | G2 B2 | d3 c | B2 A2 | G2 z D | G2 B2 | d3 c | B2 A2 | G2 z B | B B B B | B2 A G | B d c B | 
 A2 z D | G A B c | d3/2 e/ d c | B B A A | G2 z |]  