I'm not so sure the world is ready for this, however here goes...Back in the early 90's myself and a group of friends all got into DJing and mixing at the same time. Few of us had enough money to buy all the latest UK Rave 12"s (our favourite at the time), so we ended up boosting our individual record collections with very cheap records from car boot sales, charity shops and on a couple of occasions...the local refuse collection point (I was desperate and it was a HUGE box of records!).
In order to develop our mixing skills, we would get together each with a bag of the latest odd findings and attempt to mix them all together in a random and hap-hazard way. In the early days the mixer may have been fitted out with a 5 second sampler, later on a Kaoss pad was involved and more recently the powers of Serato have taken over at one venue. This all ends with an opus of undefinable sound, lovingly titled 'Chopmix'. At first we used to record these onto cassette and then play them to a packed common room at 6th Form College during particularly wet lunch breaks...much to the annoyance of the cooler students, goths and indie kids. One such chopmix featured a badly dented Jaws theme tune, another had the pig squealing from 'Old MacDonald' looped, sped up/slowed down for over 5 minutes. Musique Concrete!
The chopmix appears to have evolved now and Serato is used to provide instant access to a wider range of oddities, however there do seem to be more sensible tracks thrown into the mix now...so perhaps now is the time to broadcast this phenomena a little more?