Hi,
Personaly, I use “shift+tab/tab” for jumping to previous/next track.
I would like to use the followings keys for jumping to previous/next column:
“Shift+Left/Shift+Right”
I can’t use the key because key is not assignable 
I think that it will be nice if you can improve the custom keys…
Thank you & Greetings,
ViZiON