Develop a musical creation based on the specified alphabetical structure and given motif.
X:1
L:1/8
M:2/4
K:G
['(3A/B/A/G .E.G', 'g{ag}d{e=f} ed Bd']  
X:1
L:1/8
M:2/4
K:G
 G/A/ | B{cB}G (3A/B/A/G | .E.G D/E/G/A/ | BG (3A/B/A/G | Bd d/e/d/c/ | BG (3A/B/A/G | 
 .E.G .DG/A/ | (3B/c/B/G Ad | Bg G :: z |{def} g{ag}d{e=f} ed | Bd de/f/ | gd (3e/=f/e/d | BGG z | 
{def} g{ag}d{e=f} ed | Bd dd/^c/ | (3B/c/B/G Ad/c/ | BGG :|  