Whereas the digital technology of the 80s and 90s fed the collective experience of the dancefloor, the communicative technology of the 21st century has undermined it, with even clubbers obsessively checking their smartphones. (Beyoncé and Lady Gaga’s ‘Telephone’ – which sees the pair begging a caller to stop bugging them so they can dance – now seems like a last failed attempt to keep the dancefloor free of communicational intrusion.)