Early DJ techniques In the early seventies the DJs’ tools began to improve as the market for dance music began to expand. Yet, the beginnings were hard, for there were only two types of records available, 45s and 33 1/3 LPs, which had "A" sides and "B" sides, and different songs were recorded on both sides. A record which allowed more creativity, namely 12" dance mixes specifically intended for DJs, had not yet appeared on the market. DJs had to manage without basic equipment such as DJ mixers or headphones. What is more, the turntables ran only at two speeds, 45 RPMs and 33 1/3 RPMs. It was impossible to vary the speed, so the turntable moved continuously. In practice, it could be described as follows: DJs started to play one record. Then they took it off the turntable, prepared another record, put this one on and played it. In reality, "putting on and taking off" the record cannot be called mixing. As expected, DJs needed time to change the vinyl disc and thus dancers had to wait between the records. There was, however, one way that helped DJs overcome these technical problems. This method was called slip-cueing. The main part of the trick consisted in a duplication of records. In other words, the record collection needed to be copied. DJs had two good turntables at their disposal. They rigged the two tables with a switch into the amplifier so they could move from one to the other. Then they put the same recording on each turntable, to try to ...