Kiss: still crazy, crazy after all these years
It's nearly forty years since glam rock band Kiss formed in New York in 1973.
This week they've been in London, playing a sold-out concert in aid of the charity Help For Heroes.
Kiss also found time to launch one of the most expensive pieces of rock memorabilia ever made - a book which sells for nearly £3,000 per copy.
Emma Jones went backstage to meet the band.