Construct a piece of music built on the supplied alphabet sequence and motif.
X:1
L:1/8
Q:1/4=120
M:2/2
K:G
['B2 AG E2 EG E2 e2 e', 'D2 g2']  
X:1
L:1/8
Q:1/4=120
M:2/2
K:G
"^Fast" B2 AG E2 EG | E2 e2 e [de]3 | BGAG EDBd | e2 ef gedB |[M:2/4] AGBG ::[M:2/2] D2 g2 gf g2 | 
 agag a2 g2 | D2 g2 gaga | baba b2 a2 | D2 g2 gf g2 | agab a3 a | gaba g2 ga | geeB AG G2 :|  