In 1980 or so, when I was around 10, my father bought my sisters and I a present. It was a cassette player, one of those mono boxes that are no longer to be found, and a few cassettes. These were the soundtrack to a Hindi movie, Rishi Kapoor’s Zamaane ko dikhana hai, an album by the Caribbean band Boney M called Nightflight to Venus, an anthology of the Swedish band Abba and, less predictably, Man Machine, an album by the German electronic group Kraftwerk. I remember them well because in the months that followed we played all four so