Not wanting to pay a hefty license fee led me away from Ableton and into the loving arms of Renoise. It has an unlimited free trial with no restrictions, but a full license is $80 per FULL POINT RELEASE. That is: if you pay at v3.2, you don't pay again until v4.2. I paid once in 2012 and still haven't paid again yet. So it's cheap. But it's also fully featured, and surprisingly powerful. It's got a scary UI and... Source: almost 2 years ago

If you're in to music creation, give it a go. http://renoise.com. Source: over 2 years ago

There's plenty of software available for PC so it's easy to try out if tracker workflow is your thing :P I think Renoise is the most popular and most powerful tracker and there's a free demo available in https://renoise.com. Source: over 2 years ago

Maybe something like this? https://vmpk.sourceforge.io. Source: about 1 year ago

Second. Are you sending and recovering normal MIDI Notes okay? This rules out most connectivity issues between your OS, software and hardware. You can use Pocket MIDI and VMPK to test this out. Source: over 1 year ago

Emulate midi input. Run a loopback midi driver and a program that can send (and optionally receive) midi. For example, you can run LoopBe1 and VMPK. This setup also works for people without a midi keyboard; they can use a conventional keyboard to provide input to VMPK, which will then generate the midi notes for LoopBe1 (which VRChat will pick up). Just make sure that the Midi Output Driver in VMPK is set to... Source: over 2 years ago

VMPK (https://vmpk.sourceforge.io/) is handy too - it's a virtual MIDI keyboard that you can use to play some of the stuff in MAME if you don't have a real MIDI keyboard of some sort. Works on Windows, Linux, and Mac. Source: almost 3 years ago

I found this: Https://vmpk.sourceforge.io. Source: about 3 years ago