Gamecritics.com has published an interview with Alex Rigopulos, co-founder and CEO of Harmonix. He talks about the history of the company and their games Frequency, Amplitude and Karaoke Revolution. It's pretty interesting.

I know some people at Harmonix, and at GDC this year I had the pleasure of visiting them in one of their hotel rooms. I played Karaoke Revolution (evidence of which can be seen here) and saw the new game they currently have in development, which does something very cool I won't mention here. I had a great time - thanks to all the people from Harmonix for their hospitality! I urge everyone buy a copy of Karaoke Revolution, it's a lot of fun.

(Interview link found on Slashdot Games.)