A DJ mixset is usually performed live in front of an audience in a nightclub, party, or
rave setting. Mixsets can also be performed live on radio or recorded in a studio. Methods of mixing vary slightly depending on the music genres being played. House and trance DJs tend to aim for smooth, blended mixes while hip-hop DJs may use
turntablism, scratching and other cutting techniques. Studio DJs have the luxury of spending more time on their mix, which often leads to productions that could never be realized in real-time. Traditional DJ mixing with vinyl required the DJ to sync the tempo of the tracks and modify each track's volume and equalisation to create a smooth blend. DJs can use a mixer's
crossfader to switch between tracks or use the volume control for each source with the crossfader permanently positioned in the middle. Mixing is usually done through the use of
headphones and a monitor speaker or
foldback as basic aids. At this basic level, the DJ is required to develop a specific auditory skill where each track's tempo has to be distinguished while listening to more than one piece of music. The use of compact discs and players such as the
CDJ brought technological advances for the DJ performing a mix including a readout of the bpm and a visual representation of the beat. Modern computer technology has allowed automatic
beatmatching and led to debate regarding its use, which is sometimes described as cheating. DJ software provides automatic beatmatching and key detection which simplifies harmonic mixing. == Legality ==