The thing about simplicity is it's not easy to achieve. To many, simplicity can mean repetitiveness and maybe even a lack of intelligence, those kind of things, but simple yet unique is the key.

With Free, we had phased out all of the blues material and wanted to phase in all original material, and the only song that stayed from our blues past was 'The Hunter' by Albert King. People just loved that. And I said, 'We have to write a song that will top that - otherwise, what are we doing here?' That was the birth of 'All Right Now.'

You go through periods of times where bands are calling the shots, and then sometimes, you've got the record companies calling the shots. I think it has to be a bit of both to make the thing work.

There are so many challenges and different parts to the job of singing. When you're in the studio, you have to be really, really, precise. You've got to keep everything clean and nice because that's going to be something that's down forever. And then you go onstage, and it's much more in the moment.