Develop a musical creation based on the specified alphabetical structure and given motif.
X:1
L:1/8
M:2/4
K:G
['B2 d2 c>B AG']  
X:1
L:1/8
M:2/4
K:G
|:"G" B2 d2 |"Am" c>B AG |"C" EG AB |"D" B>A GA |"G" B2 d2 |"Am" c>B AG |"C" EG"D" AF |"G" G4 :: 
"Em" E3 G |"D" F3 A |"G" B3 G |"Bm" d>c BG |"Em" E3 G |"D" F2 GA |"G" B2 BG |1"D" AB/A/ GF :|2 
"D" A4 |]  