Formulate a musical piece by utilizing the specified motif and alphabet-based structure.
X:1
L:1/8
M:2/4
K:G
['D AG/A/ cB/A/ AF/A/ Dd B :|2,4']  
X:1
L:1/8
M:2/4
K:G
 D |"G" GF/G/"D" AG/A/ |"G"{A} BA/B/"C"{B} cB/A/ |1,3"G" GF/G/"D" AF/A/ |"G" Dd B :|2,4 
"G" GF/G/"D" AD |"G"{F} G3 :| B |:"G"{B} d>B GG |"D" F/A/D F/A/D |"D7"{A} c>A FD/{E}F/ |1,3 
"G" GA Bc :|2,4"G" G3 :|  