Compose a musical piece by integrating the alphabetic representation of the specified sequence and the provided motif.
X:1
L:1/8
M:2/4
K:G
['Bd dd ce ee df af', 'a g2', 'a z']  
X:1
L:1/8
M:2/4
K:G
 z | Bd dd | ce ee | df af | gB d2 | Bd dd | ce ee | df af | gb g ::[K:C] a | g2 e2 | c3 a | 
 g2 f2 | B3 b | a2 f2 | B3 b | a2 g2 | e3 a | g2 e2 | c3 a | g2 f2 | B3 b | a2 g2 | f2 B2 | c2 B2 | 
 cc c :| g | b z a z | a z g z | a z g z | e3 g | a z g z | f3 g | a z g z | e3 g | b z a z | 
 a z g z | a z g z | e3 g | a z g z | f z B z | ce dg | cc c :|  