<P> "When you're out there in this vast stadium, you have to physically tiny up on stage, so that's why on the 1981 - 2 tour we had those coloured panels and later we started using devices like video screens . We became very aware of not being seen, of just being there like ants . Mick is the one who really has to project himself over the footlights . And when the show gets that big, you need a little extra help, you need a couple of gimmicks, as we call it, in the show . You need fireworks, you need lights, you need a bit of theatre ." </P> <P> As time went on, their props and stage equipment became increasingly sophisticated . When they started to fill stadium sized venues and bigger, they ran into the problem of the audience no longer being able to see them due to the increased seating capacity--this problem was especially clear in their free 2006 concert in Rio de Janeiro on the A Bigger Bang tour, which used over 500 lights, hundreds of speakers, and a video screen almost 13 metres in length . Due to the vast size of the beach which the Stones performed on (2.5 km), sound systems had to be set up in a relay pattern down the length of the beach, in order to keep the sound in sync with music from the stage; for every 340 metres of beach, the sound had to be delayed an additional second . </P> <Ul> <Li> Mick Jagger--vocals, harmonica, rhythm guitar, percussion, keyboards (1962--present) </Li> <Li> Keith Richards--rhythm and lead guitar, bass guitar, vocals (1962--present) </Li> <Li> Charlie Watts--drums, percussion (1963--present) </Li> <Li> Ronnie Wood--lead and rhythm guitar, bass guitar, backing vocals (1975--present) </Li> </Ul> <Li> Mick Jagger--vocals, harmonica, rhythm guitar, percussion, keyboards (1962--present) </Li>

Who wrote most of the music that the rolling stones recorded during the early 1960s