So where are the strongAnd who are the trusted?And where is the harmony?Sweet harmony -'cause each time I feel it slippin away, it just makes me wanna cry:What's so funny 'bout Peace, Love, and Understanding?

In the '70s, you had to come up with an album every year whether you were ready or not.

And there were sort of three toys for boys and three toys for girls. And the boys I can remember was, well, there was a Dan Dare Ray Gun. Dan Dare was a sort of a cartoon character. He was just sort of a - he was like a Battle of Britain fighter pilot, only in space.

So where are the strongAnd who are the trusted?And where is the harmony?Sweet harmony -'cause each time I feel it slippin away, it just makes me wanna cry:What's so funny 'bout Peace, Love, and Understanding?

I found myself in Zurich Airport. I'd done a TV show, oddly enough, with Mavis Staples. That's the way they do it in Switzerland. And I'd had a bit of a late night with members of her band. And I was - my flight was delayed. And I was sitting in the airport, and I just came up with the idea. And by the time, we landed at Heathrow, I'd pretty much sort of got it.

I felt that in order to do what I wanted to do, I had to do certain things, and one of them was to have a hit in my own right. At least one.

You've got to really know your song, inside and out.