Develop a musical creation based on the specified alphabetical structure and given motif.
X:1
L:1/16
M:2/4
K:G
['Bc dBeB dBAB GFGA |1,3 GDGA BGBd', 'B2AG FGA[FB]', 'DEFD GFGA B2AG Adde dcBA :|2,4 c2Bd']  
X:1
L:1/16
M:2/4
K:G
 Bc | dBeB dBAB | GFGA |1,3 GDGA | BGBd cBAG | FGAF D2 :|2,4 GABc | defe dcAF | G2{A}GF G2 :: 
 (3DEF |: GFGA B2AG | FGA[FB] |1,3 DEFD | GFGA B2AG | Adde dcBA :|2,4 c2Bd | defe dcAF | 
 G2{A}GF G2 :|  