I remeber some people recently asking for pointers with regard to scratching, so I thought that this video (despite being rather advanced) shows what is happening with the crossfader in relation to the manipulation of the vinyl. Ed
http://www.youtube.com/watch?v=zaznht-Y8hw&mode=related&search=scratchin
http://www.youtube.com/watch?v=zaznht-Y8hw&mode=related&search=scratchin
