> 'Smiths'. It's an adjective there. You could argue for 'Smiths'' though in
> other contexts: "The Queen is Dead is the best of The Smiths'
> records". 'Smith's' is always incorrect.
> Try replacing Smiths with another, singular band name in your sentence and
> you'll see it easier. You wouldn't say "I put on a Franz Ferdinand's
> record", would you?
No, I haven't got a Franz Ferdinands record.