Compose a music piece that includes the specified motif while adhering to the outlined alphabetical sequence.
X:1
L:1/8
M:2/2
K:G
['', 'bgag dgeg dgge', 'efge BAGB AGEG DEGB AG [GB]2 [G_B]/-[GB]/-']  
X:1
L:1/8
M:2/2
K:G
 Bc |: d2 ga bgag | dgeg dgge | dega bgag | e d2 d [dg]3 e | dega bgag | dgeg dgge | BAGB AGEG |1 
 DEGB A G2 B :|2 DEGB AG [GB]2 |: [G_B]/-[GB]/- [GB]2 B AGEF | GABd efge | BAGB AGEG | 
 DEGB AG [GB]2 | [G_B]/-[GB]/- [GB]2 B AGEF | GABd efga | gedB AGEG |1 DEGB AGGA :|2 DEGB AGGB ||  