Before I joined Kraftwerk in 1971, I played guitar in a band called Spirits of Sound, whose members included (at times) amongst others singer Wolfgang Riechmann (Sky Records released his only solo album Wunderbar shortly after his death in 1978) and drummer Wolfgang Flür (later on Kraftwerk, now solo). The music of S.o.S. in the mid 60's first was the English pop and rock music of the times (Beatles, Kinks, Rolling Stones ).