Develop a musical creation based on the specified alphabetical structure and given motif.
X:1
L:1/8
M:4/4
K:G
['GABc d2 cB cdef', 'dBdg eceg']  
X:1
L:1/8
M:4/4
K:G
 D2 | GABc d2 cB | cdef gfge | dBgf edcB | dc B2 AcBA | GABc d2 cB | cdef gfgd | Bdgb agfa | 
 g2 b2 g2 :: Bc | dBdg eceg | dBdg eceg | dBgf edcB | dc B2 B2 Bc | dBdg eceg | dBdg eceg | 
 Bdgb Adfa | g2 b2 g2 :|  