To our ears, 1975's Radioactivity is Kraftwerk's most ghostly and otherworldly album. It was famously their first set made entirely with electronic instruments - some home-made - and now sounds like a bridge between the more krautrock-style hypnotism of the earlier Autobahn and the slicker, more tuneful albums that followed it. In other words, it's as weird, alien and otherworldly as it is ground-breaking and pop-leaning. This 2020 reissue is well worth picking up, not least because it comes pressed on translucent yellow vinyl and comes accompanied by a glossy, 16-page booklet full of iconic Kraftwerk images.