The director was not a fan of Michael Wadleigh's coverage of the 1969 music festival, because it suggests the event was all love, peace and hippies - and he'd like to show the clash of music industry and idealism that he saw at the Isle of Wight event in 1970.

Lerner, who has released concert films featuring Jimi Hendrix and The Who's performances at the Isle of Wight, has just released a DVD/Blu-Ray called What's Going On, which captures Rory Gallagher and Taste's show-stopping set at the festival - and he still has hundreds of hours of footage.

He tells WENN, "Message to Love got lost in the distribution and rights issues. I'd like to make the definitive festival movie. I'm hoping to. It was a very rich culture that I was able to capture in that movie because of my feelings about what had been missing in Woodstock and other films like that.

"When I made Festival (about the Newport Folk Festival), what was happening behind the scenes and what I didn't film... there were arguments and political jockeying. It took place there on a smaller scale than Woodstock and the Isle of Wight. I had to turn the camera the other way."

He adds, "When the (Isle of Wight) promoters came to me and said they wanted to rent Festival to show there, I said, 'What about another film?' and that got me started down this trail. I wanted to portray the difference between the commercialism of the music business and the idealism of the music.

"I have an enormously rich amount of material - 200 hours. I've only released about 20 hours."

But while Lerner is looking forward to debuting unseen The Doors performance footage and samples of Joni Mitchell's set, where she broke down down and then "does a great performance after calming the crowd down", any new film won't feature Sly & the Family Stone.

He adds, "I almost got beaten up by Sly & the Family Stone. They told me to get the hell outta there. Why? Who knows? I think they thought they were gonna make their own film. There was a lot of politics."