Allow grouping of different tracks into collapsible horizontal rows

There’s a user of Android version, I only have access to my tablet to use but vertical space is quite limited. I work on full cast dramatized audiobooks so suffice to say I can rack up a large number of separate tracks which take forever to scroll through using a mobile device and it gets rather unwieldy.

It seems like it would be a rather easy to implement solution to allow different tracks to be grouped together into a collapsible sort of group cluster that would appear just like it’s its on track that you can then expand and see the tracks within it.

The minimize track feature can be useful at times but generally speaking it’s not a very functional from a UX standpoint. This would be much more usable as a single tap expand / drop down feature on the left hand header title column. Please the love of God look into adding something like this for my sanity’s sake.