Develop a musical creation based on the specified alphabetical structure and given motif.
X:1
L:1/8
Q:1/2=80
M:4/4
K:C
['ef g2', 'B3 A']  
X:1
L:1/8
Q:1/2=80
M:4/4
K:C
 E2 | AB c2 Bc d2 | c4 c2 d2 | ef g2 f3 e | e6 ef | g2 fe d2 de | f2 ed c2 cd | e2 dc B3 A | A6 :: 
 B2 e2 B2 c2 | B3 A GF G2 | cdef d3 e | c6 ef | g2 de f2 cd | e2 Bc d2 cd | e2 dc B3 A | A6 :|  