Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/4
M:4/4
K:G
['d B']  
X:1
L:1/4
M:4/4
K:G
|: d/B/ |"G" G/A/B/c/ d B |"G" g B d B |"G" g B"Em" d B |"Am" a A"D7" A B/A/ |"G" G/A/B/c/ d B | 
"G" g B"E7" d B |"Am" c A"D7" d3/2 c/ |"G" B G G :: f/ |"Em" g3/2 a/ g e |"Am" a3/2 b/ a f | 
"Em" g3/2 a/ g e |"Em" b e"B7" e f |"Em" g3/2 a/ g e |"Am" a3/2 b/ a f |"G" g d"D7" e d/c/ | 
"G" B G G :|  