Develop an original musical piece that integrates the given alphabet sequence and motif.
X:1
L:1/8
M:2/2
K:G
['', 'G2 (BG)', '', 'edgd Bdgd e2 dc Bdgd |1 edef']  
X:1
L:1/8
M:2/2
K:G
"^A" |: (BA) | G2 (BG) AcBA | G2 (BG) GEDE |1 G2 (BG) ABce | dBgB c2 :|2 DEGB cBAe | dBgB c2 |] 
"^B" |: BA | Bdgd edgd | Bdgd e2 dc | Bdgd |1 edef | gedB c2 :|2 egfa | gedB c2 |]  