Develop a musical creation based on the specified alphabetical structure and given motif.
X:1
L:1/8
M:2/2
K:D
['B2 BF', 'gabg afdf']  
X:1
L:1/8
M:2/2
K:D
 B2 BF ABde | fdef edcd | B2 BF ABdb |1 afef dedc :|2 afef d3 e || f2 af g3 b | afdf efde | 
 fgaf gabg | afdf ef d2 | f3 a gabg | afdf efdc | B2 BF ABdb | afef d2 dc ||  