Myself and my mates were all keen bedroom DJs back in the 90s and the only way of recording our mixes was on cassette tapes. I also use to tape a lot of DJ mixes from the likes of Pete Tong, Stu Allan and Andy Roberts from the radio which I still have on cassette and I doubt these recording exist anywhere else these days. I dug all my tapes out a few months ago to digitise them and they are still waiting for me to hook up my Technics tape deck to record them onto my computer.