Compose a piece of music using the provided motif and follow the designated alphabet character structure.
X:1
L:1/8
M:2/2
K:G
['d2 BG']  
X:1
L:1/8
M:2/2
K:G
|:"G" d2 BG d2 BG |"D7" FG AB cB AG |"G" d2 BG d2 BG |"D7" FG AF"G" G4 ::"G" G2 GG"^(D7)" FG AB | 
"D7" cA dc Bc AF |"G" G2 GG BG dc |"D7" Bc AF"G" G4 :|  