Develop a musical creation based on the specified alphabetical structure and given motif.
X:1
L:1/8
Q:1/4=58
M:2/4
K:Gb
['E E', 'A,6 G,/ G,3/2 G, G,', 'B, A,', '']  
X:1
L:1/8
Q:1/4=58
M:2/4
K:Gb
 E E E E | B,4- | B,4 |]: C B, C B, ||[M:3/4] A,6 | G,/ G,3/2 G, G, E, E, | E,6 || 
[M:2/4] B, A, B, A, ||[M:3/4] G,6 | A,/ G,3/2 G, G, E, E, ||[M:2/4] E,4 | E,4 :|  