Nested beat/bassline editors?

Currently, when you add a new Beat/Bassline editor inside a Beat/Bassline editor, it just creates a new Beat/Bassline **inside the Song Editor**. The way the interface is set up lead me to believe that it should be created inside that same Beat/Bassline editor instead of outside of it, just like the sample track and automation track buttons.


I personally believe nested Beat/Basslines would be great for being able to build patterns out of other, smaller, patterns. If this proposal is rejected for whatever reason, at least that misleading _Add Beat/Bassline_ button should be removed from the Beat/Bassline editor.

Start by reproducing the Add Beat/Bassline action from within a Beat/Bassline editor and compare where it creates the new editor relative to the Song Editor. Read the Beat/Bassline editor controls alongside the sample track and automation track buttons. Done requires an agreed outcome: support nested Beat/Basslines or remove the misleading Add Beat/Bassline button.

Written by the indexing model from the issue text.