Richard D James, AKA Aphex Twin, has played records to audiences for a long time. But he’s such an iconoclast his sets feel like events. This is underlined by the fact that most take place at festivals, such as this year’s Coachella, on whose poster Aphex Twin was listed in the second-largest font.

By now, he qualifies as an institution. ‘Syro’, the 2014 album that was the first James had released under any name in eight years, won a US Grammy for Best Electronic Album, an award it deserved. Nearly every dance producer to come after has cited him as an influence. And Aphex Twin tribute DJ sets abound online.

No wonder: under various monikers, James has stretched dance music’s self-made strictures in as many directions as anybody you could name. That includes his outtakes – 269 of which he uploaded to SoundCloud, under a variety of aliases, beginning in January 2015, not long after releasing ‘Syro’. You can find the entire cache on the Internet Archive – search for ‘user18081971’ (James’ birthday) – but a pair of mixes surveying the trove will start you off right.