Compose a music piece that includes the specified motif while adhering to the outlined alphabetical sequence.
X:1
L:1/8
M:6/8
K:G
['B2 B Bgf e2 e efg ded', 'b2 g a2 f gfe']  
X:1
L:1/8
M:6/8
K:G
 (dc/) | B2 B Bgf | e2 e efg | ded dcB | (BA)A A2 d/c/ | B2 B Bgf | e2 e efg | ded cBA | 
 (AG)G G2 :| (g/a/) | b2 g a2 f | gfe dcB | cdc BgB | (BA)A A2 g/a/ | b2 g a2 f | gfe agf | 
 bag fge | dgf edc | B2 B Bgf | e2 e efg | ded dcB | (BA)A A2 d/c/ | B2 BBgf | e2 eefg | ded cBA | 
 (AG)G G2 |]  