Custom shift sounds?

Is it possible some way to customize the sounds that occur on a shift?

I think there was this workaround by setting a custom music file as the sound that you want to play at the new/shifted-to screen.
at least I think it was music that was only played once and ambiance that got repeated. otherwise it's the other way around.

You cant customize the shift sound proper. But you can for example, in a place where the ''music'' bank its not used make the shift teleport to a screen where the music played its the sound effect you want (Implying that you already know how to put custom music,tilesets,etc) since the "music" never loops.
[shamelessplug]You can also see my level as an example[/shamelessplug]
PS: Also, neatly using Purple Pineapple's KS mod you can make a shift make the shock sound of bank 2 object 18  .

Thankyou