As you move through life, you develop a broader philosophy. The world is black or white, you have an answer for everything, you see the world in a very rigid way. I.G.: When you are young, you have your favourite colour, your favourite animal, your favourite thing. Swissinfo: Your last studio album, "Rapture of the Deep", has an elegant, poetic sleeve, that seems a world away from hard rock clichés. Claude is one of those people who are passionate and take big risks by putting their name, reputation and money on the line. But there are also those who love music, and without being musicians themselves get involved in their own way. A lot of people in this business have a bad reputation: people who only think of furthering their careers. And no festival can compare with Montreux. And today, playing at Montreux, it's a bit like that. When we were young, in England, we used to play a residency once a week in a small club where we knew everyone. Since the beginning, the ties between the career of Deep Purple, Montreux and Claude Nobs really make up quite a story. You feature on the official poster and you played the final night, which is usually reserved for the giants of jazz. Swissinfo: This year was all about Deep Purple returning to Montreux. The band, who composed their influential track "Smoke on the Water" in Montreux in 1971, lit up the final night of a festival that was rich in memorable performances. This content was published on J14:55 J14:55 Lead singer Ian Gillan told swissinfo ahead of the gig what it meant to be back lakeside. The 40th Montreux Jazz Festival ended on Saturday with a concert by Deep Purple. Ian Gillan (left) with guitarist Steve Morse Keystone