Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
Q:1/4=120
M:9/8
K:G
['dBG ABc']  
X:1
L:1/8
Q:1/4=120
M:9/8
K:G
 D |"G" GDG BGB dBd |"G" gag gdg"D" f2 d |"C" efe efg abc' |"G" gag"D" fdf"G" g2 :: B/c/ | 
"G" dBG dBG"Am" ABc |"G" dBG dBG"Am" ABc |"G" dBG dBG"D" ABc |"C" ece"D" fdf"G" g2 :: d | 
"G" gdg"G" gab"D" afd |"G" gdg gab"D" a2 d |"G" gdg gab"D" afd |"C" ec'a"D" fdf"G" g2 :|  