We'll forgive the extremely nice folk behind the PDJ when they claim to have the first fully self-contained portable DJ set-up.

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So, already the PDJ will be familiar in set-up to any DJ who picks it up (something the Pacemaker couldn't claim with its proprietary interface).

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The controller is the same four-beamed multi-button affair we've seen before, but now with a custom version of the aforementioned DJ application to call its own, and make the set-up a cinch.

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The parade was followed by a ticket-only party in Preston Park featuring a set by DJ Fatboy Slim.

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Native Instruments set the high watermark for DJ software with its desktop-based Traktor application, and now it's available in compact iOS form.

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John Legend premiered his Benny Benassi-produced single "Dance the Pain Away" in the Sahara tent during the DJ's set, and Solange made a guest appearance during the performance of her friends the xx.

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You can also use the same app to prepare tracks for more advanced DJ techniques, meaning -- as the marketing material will have you believe -- you can sketch out a set while skateboarding through your hood, before rolling up and rocking the party.

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