Develop a musical creation based on the specified alphabetical structure and given motif.
X:1
L:1/8
Q:1/4=100
M:2/2
K:G
['b/a/g/f/ gd B2 Gc', 'BGdG eGdG']  
X:1
L:1/8
Q:1/4=100
M:2/2
K:G
 g | b/a/g/f/ gd B2 Gc | Bd e/d/c/B/ cAAg | b/a/g/f/ gd B2 Gc | BdAc BGG :| c | BGdG eGdG | 
 BG e/d/c/B/ cAAc | BGdG eGdG | BdAc BGG | BGdG eGdG | BG e/d/c/B/ cAAc | BdgB cead' | bgaf gGG |]  