 After the commercial success of "Autobahn" in the US, where it peaked at number 5 in the Billboard Top LPs & Tapes, Hütter and Schneider invested in updating their studio, thus lessening their reliance on outside producers.At this time the painter and graphic artist Emil Schult became a regular collaborator, designing artwork, cowriting lyrics, and accompanying the group on tour.The year 1975 saw a turning point in Kraftwerk's live shows.