listener for any clip playing

Is there a listener for something like ‘all tracks playing status’?

Or the possibility to get ‘true’ if any track in the whole set is playing a clip and ‘false’ if no track is playing a clip?

I could do this for single tracks by using the positive or negative index I get from the following code:

self.song().tracks[“track-id”].playing_slot_index >= 0
self.song().tracks[“track-id”].playing_slot_index < 0

I want to use this to lighten the LED of my “stop all clips” button but only when clips are playing.
Currently I could implement this with my workaround for only the 4 tracks in my session box…

Any further suggestions?

Best,
Lukas