This is a good buy in my opinion. Tells you in depth about the conception of detroit techno and the main players. If you are already into detroit techno then you will allready know most of the info and it doesnt really shed any new light but still... its inspirational. If you are into making electronic music,rather than listening,this is a must, even shows you bits of studio footage and kit lists. Only 4 stars? well the DVD boasts about music within the DVD?? there is none to speak of, just background interview stuff. Dont pay too much though as a couple of watches and that will be it. Keep the 808's and 909's banging.