I have tried Hydrogen some time ago when I tried to build a linux audio workstation with Jack and Ardour.<p>As much as it pains me to say this, don't expect it to be even remotely as good as commercial software drum machines like EZDrummer, Superior Drummer or Studio Drummer in terms of sample quality or usability.<p>Generally, I found it prohibitively complicated to set up a well-working low-latency audio workstation, even though I had one of the few soundcards that had drivers for Linux (Edirol FA-101).<p>EDIT: That was like 5 years ago, maybe the audio landscape has changed until then. 2017, year of the Linux Audio Workstation!<p>2nd EDIT: Today I use Reaper on Windows. Reaper is amazing and the only reason I have Windows installed on my private computers. It is to audio editing and recording what Sublime Text is to text editing: slick, fast, inexpensive, easy to install, easy to use.