Compose a musical piece using the specified sequence's alphabetical representation and the provided motif.
X:1
L:1/8
M:6/8
K:G
['B2 A BGG G2']  
X:1
L:1/8
M:6/8
K:G
 D | GAG ABd | (2:3:2e3 .e3 .f3 .g3 .B A2 d | (BG) A B2 A | BGG G2 g | eege-e g | e3/2 f/ g(ed) B | 
 ded ded | dgd dBG | cBc dBd | egB A2 d | BGA B2 A | BGG G2 z |]  