Mad Catz will surprise you.
They got tapped to make the Rock Band keytar and they knocked it all the way out of the park by making a genuinely good midi controller that just happened to also be a video game controller.
Keep in mind, they could have phoned it in and not lost a cent, because what does Rock Band need? Four buttons? Red yellow green blue? Nope, here's 25 velocity-aware keys and a DIN port, and that's just for starters.
Here's a decent write-up I found: https://cdm.link/2010/10/hands-on-rock-band-3s-keytar-a-surprisingly-serious-80-midi-keyboard/