[mxmilkb]

Something utilising and also filling in the gaps of the JACK, LV2, and soon PipeWire based modular Linux/libre audio workstation (including NSM, CV, Atoms) but more of focus on Ableton Link than JACK Transport?

Check out Agordejo, Carla, Non-Mixer/jack_mixer, seq66 (nsm branch).

[adamnemecek]

I'm more focused on composition. Linux support will come at some point, not immediately.

It won't be open source if that's what you are asking.