Compose a musical piece using the specified sequence's alphabetical representation and the provided motif.
X:1
L:1/8
M:4/4
K:G
['B2 AG DGBG']  
X:1
L:1/8
M:4/4
K:G
|: dc |"G" B2 AG DGBG |"D" FAdA"G" DGAG | B2 AG DGBG |"D7" B2 A2 A2 dc |"G" BGDG"F#dim" cAFA | 
"G" dBgB"C" ec"D"Af |"Em" gfed"D7" cBAd |"G" B2"C" G2"G" G2 :: ga |"G" bdgd Bdgd | bdBg BdgB | 
"Am" cedc"G" BGdc |"C" c2"A/C#" BA"D" A2"D7" dc |"G" BGDG"F#dim" cAFA |"G" dBgB"C" ec"D"Af | 
"Em" gfed"D7" BdAd |"G" B2"C" G2"G" G2 :|  