https://github.com/stargateaudio/stargate
I haven't played with it heavily but these are my first impressions. I downloaded the .deb onto kubuntu 20.04. There were dependency issues but I fixed them with "apt --fix-broken install".Stargate DAW
Stargate is an all-in-one DAW and plugin suite, designed to be a comprehensive solution for music production, with a focus on providing unique and innovative features, especially for EDM production. To understand what Stargate is, and why, read the project design principles.
The only way I could get sound of it was to use it with JACK but your mileage might vary. When restarting the program after changing audio, the program often stalled. I had to end the process and start again, then it was fine. It has a couple of instruments and sample player, which loads SFZ files as well. You can use MIDI in but there is no MIDI out that I can see. I can't see any sort of tempo control, which is odd. There a few effects but also very good audio routing out so you could easily send audio to another program for effects.