I make music using the Linux Multi-Media Studio LMMS. Even though the software certainly has its pitfalls, I think that limitations inspire creativity, and also it's free and I've built up a good collection of instrument presets to use.
I post some of my music online in a few places.
I promise, I'm not a shitty SoundCloud rapper. I update this from time to time.
I don't post videos very often anymore, but I might at some point in the future.