Hello,
often I work on editing multiple midi part in the Key editor, switching from and instrument to another by selecting it in the editor toolbar. I love this powerful feature!
Anyway there are a lot of times that I need to make decision on a single midi part in solo BUT the “edit solo” button on the left corner does not work when there are multiple midi part selected.
Could be very useful to work with Edit Solo button also in multiple part selection, maybe adding a cmd+click on the actual solo button.
Even in the key editor I want also to request the possibility to switch views from multiple midi parts view (as today) to single midi part for best focus on notes of the single part, maybe with a key command or a dedicated button or a double click where you want 
In prospective this request can be extended also in the score editor.
Thanks
