Deep Purple keyboard legend Jon Lord made a visit to Paisley to speak to students at the University of the West of Scotland.
He was appearing as a guest lecturer on the subject of improvisation, a technique that was central to the band's success in the 1970s and beyond.
Before talking to the students and taking questions, he spoke with STV's John Kilbride, who asked him how important this was to the band. (http://bcove.me/mlbnvb3h)
Jon Lord said : "It was the rock on which we built our house, the give and take in the moment of musicians of equal calibre, on stage in front of an audience with the given that you are entertaining, you are not navel gazing, but doing something interesting to the audience but at the same time composing something in the moment. It is one of the most daunting yet massively enjoyable processes I can think of."
"And it was very much part of late 60s and early 70s rock, it wasn't exclusive to Deep Purple."
As to whether this is something that is lacking from many modern acts, he said: "I think it's still bubbling under, I think it's less part of modern popular music, it's very much more structured now in some cases that is an improvement, a move for the better, but in some cases I think it's lost some of that dancing on the edge of a precipice feel that a really good concert can sometimes have."
Deep Purple is widely thought of as one of the greatest rock bands of the 1970s, and enjoyed huge international success. Their albums In Rock, Machine Head and Made in Japan are amongst the biggest-selling rock albums ever, and remain a considerable influence on the genre.
Between periods with Deep Purple Jon Lord was a member of Whitesnake, another seminal rock band that continues to enjoy international success
Asked which musicians he found inspiring to work with, he said: "Ritchie Blackmore is a piece of work, an astounding musician, a law unto himself and very challenging to work with.
"I learned a lot from him and hopefully he learned something from me to. Perhaps he learned from me that there is such a thing as patience."
"I became friendly with and worked with George Harrison, he was known as the Quiet Beatle, and I learned a lot from him, not just about a way of looking at music but a way of looking at life. He was a wonderful man and a great friend."
With Jon Lord now retired from Deep Purple, he was asked if he still kept up with the band, who are still very much active, with former Rainbow keyboard played Don Airey taking his place.
Jon Lord said: "The drummer lives not too far from me, Iain Paice, so we're good mates. Roger I talk to a lot. Ritchie I haven't seen in years but we converse via the ether. They're all good pals, they're pals of a lifetime.
"I've spent over 30 years with most of them, that's a friendship that's not going to disappear."
As for his future plans, he said: "I'm just going to keep going along with the orchestra project. I'm putting together what I suppose what you could call a crossover prog rock thing, I want to play a bit more of the Hammond organ with a guitarist, bass and drums and go on the road and see what happens.
"As long as the legs keep working and the hands keep working and the brain keeps reasonably sharp I'll keep doing it until it doesn't seem right to do it any more."