Sidebar with Alphabet oriented for MacApp

I am curious is there any particular reason why Mac App can not slide the sidebar all around with alphabet oriented like what you do for Iphone App?

Please see the screenshot then you know what I mean.

With 60K+ song it’s pain in the neck to slide the screen page by page in the MacApp.
VERY SLOW.

MacApp sidebar can only slide page by page, you can not move freely all around.

Hello, RoseConnect for PC/MAC is currently in beta version and has many shortcomings.
We will update the part you mentioned. We apologize for any inconvenience.