This is a much better implementation than CALF Sidechain Compressor since CALF relies on each sound source to be actively playing, but if you were to mute parts like the kick, the sidechain would be inactive. This LFO implementation overcomes the need for "ghost kicks" and buses which LMMS cannot do and continues to simulate ducking on a specific channel by automating the fader to a synced LFO controller.