This has been posted today on some news aggregators, but for those of you who may have not seen it, here it is: http://musicmachinery.com/2009/03/02/in-search-of-the-click-track/ Quote: Sometime in the last 10 or 20 years, rock drumming has changed. Many drummers will now don headphones in the studio (and sometimes even for live performances) and synchronize their playing to an electronic metronome - the click track. This allows for easier digital editing of the recording. Since all of the measures are of equal duration, it is easy to move measures or phrases around without worry that the timing may be off. The click track has a down side - some say that songs recorded against a click track sound sterile, that the missing tempo deviations added life to a song. I’ve always been curious about which drummers use a click track and which don’t, so I thought it might be fun to try to build a click track detector using the Echo Nest remix SDK ( remix is a Python library that allows you to analyze and manipulate music). -- Florin Andrei http://florin.myip.org/