That is one thing Ubuntu doesn't have. I used FL Studio when I had Windows and I can't get rid of Windows unless I find a good alternative.
Please don't suggest LMMS!
I'm serious about making music and LMMS is not. The Depressing UI doesn't help much and it can't load any heavy VSTs. I need a Clean and Powerful one like FL Studio. I haven't heard of any other choice than LMMS so far and if there is, I haven't heard of it.