Led Zeppelin have been credited with a major impact on the nature of the music business, particularly in the development of album-oriented rock (AOR) and stadium rock. In 1988 John Kalodner, then-A&R executive of Geffen Records, remarked that "In my opinion, next to the Beatles they're the most influential band in history. They influence the way music is on records, AOR radio, concerts. They set the standards for the AOR-radio format with 'Stairway to Heaven,' having AOR hits without necessarily having Top 40 hits. They're the ones who did the first real big arena concert shows, consistently selling out and playing stadiums without support. People can do as well as them, but nobody surpasses them". Andrew Loog Oldham, the former producer and manager of the Rolling Stones, commented on how Led Zeppelin had a major influence on the record business, and the way rock concerts were managed and presented to huge audiences. In 2007, they were a featured artist in the stadium rock episode of the BBC/VH1 series Seven Ages of Rock.
