 These, beside British bands Supertramp and ELO, all demonstrated a prog rock influence and while ranking among the most commercially successful acts of the 1970s, heralding the era of "pomp" or "arena rock", which would last until the costs of complex shows (often with theatrical staging and special effects), would be replaced by more economical rock festivals as major live venues in the 1990s.The instrumental strand of the genre resulted in albums like Mike Oldfield's "Tubular Bells" (1973), the first record, and worldwide hit, for the Virgin Records label, which became a mainstay of the genre.Instrumental rock was particularly significant in continental Europe, allowing bands like Kraftwerk, Tangerine Dream, Can, and Faust to circumvent the language barrier.