Create music using the given musical theme and adhere to the outlined letter-based structure.
X:1
L:1/4
M:23/44
K:Ab
['[AC] [cE] [eA] [cE] [BD] [dG] [GD]']  
X:1
L:1/4
M:23/44
K:Ab
|: E |"Ab" [AC] [cE] | [eA] [cE] |"Eb7" [BD] [dG] [GD] |"Ab" [AC] [cA] E |"Ab" [AC] [cE] | 
 [eA] [cE] |"Eb7" [BD] [dG] [GD] |"Ab" [AC] z :: [AC] |"Db" [d-F] [d-D] [dA] | 
"Ab" [c-E] [c-C] [cA] ||"Db" [d-F] [d-D] [dA] |"Ab" [c-E] ([cC] E) |"Ab" [AC] [cE] | [eA] [cE] | 
"Eb7" [BD] [dG] [GD] |"Ab" [AC] z :|  