So Alt+Clicking the mute icon solos the track and all tracks routed to and from it. That's all well and good. But normally what I want to be able to do is first solo the Drum Bus and then solo the Bass Bus (for example) as well. The current workaround is to just un-mute the tracks one by one which is a little slow.
So perhaps Ctrl+Click or Ctrl+Alt+Click could 'add' another bus to the solo'd tracks.
More solo functionality in the mixer
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