Wolf, if you want serious sound and music production on Linux, there's REAPER

There's even a Linux build of it for the RPi now, never mind the desktop. Whoever told you there are no serious music production tools available on Linux has no clue what they are talking about. Maybe you should try visiting the forum for Reaper at the link, and drop them a message telling them that Reaper isn't a serious music production tool. Not sure how well it'll go down with them, but I'm guessing you'd either be laughed off the forum quick-like, or find yourself subjected to the swift and deadly blade of Reaper!

I hope you don't find the blade too painful, my friend - LMFAO