I've been planning to giveaway a detailed sample pack of my Sequential Circuits Drumtraks and so I thought I'd tell you a bit more about the machine whilst doing that. Download the sample pack: http://bit.ly/Drumtraks As mentioned in the film, much of the specific information about Sequential Circuits comes from "The Prophet from Silicon Valley" by David Abernethy and I thoroughly recommend getting a copy if you're into synth history. Some of the original adverts and posters come from Retro Synth Ads.