Generate a musical piece using the presented motif and follow the alphabetical structure provided.
X:1
L:1/8
M:4/4
K:G
['B2 d2']  
X:1
L:1/8
M:4/4
K:G
 D2 |"G" GFGA B2 d2 |"C" c2 E2"Am" A3 G |"D" F2 A2 D2 c2 |"G" BAGB"D" ADEF |"G" GFGA B2 d2 | 
"C" c2 E2"Am" A3 G |"D" FGAB c2 F2 |"G" G4 G2 :: B2 |"C" cBcd e2 c2 |"G" B2 d2 G3 B | 
"D" A2 c2 F3 A |"G" GABc dBAG |"C" cBcd e2 c2 |"G" B2 d2 D3 G |"D" FGAB c2 F2 |"G" G4 G2 :|  