Although their critics accused them of recording mindless pop, they made some very good records.
Smith sang soulfully on "Come Home", a Top 20 hit in 1965 which evoked the monotony of being on the road: We were an old-fashioned band really.
The Dave Clark Five was a phenomenally successful beat group in the Sixties, but many may have wondered why it wasn't called the Mike Smith Five.
Smith was the group's lead singer, keyboard player and chief songwriter, but it was the drummer Clark's group: he chose the personnel and made the business decisions.
We recorded "Inside and Out" and if you listen to it, you will see that it is all about Romeo and Juliet.
We did that with an orchestra and I was supposed to hold the last chord and it would be faded out.
The Dave Clark Five topped the US charts with "Over and Over" at Christmas 1965.
"We were the first group where the drummer was the front man," Clark said.
"It was always the singer that was the front man but Mike stood there and played piano and keyboards.
We weren't rebels, although we did have a few water fights, but that's the boredom getting to you.
We used to look smart and I do think that we had the best show around.