The famous music that's helped make the last three Harry Potter films so magical may be changing for the fourth.

There are loads of reports that top Scottish musicians Franz Ferdinand and ex-Pulp singer Jarvis Cocker are working on the Goblet of Fire.

Franz Ferdinand told Radio 1 that they've been working with Jarvis on tunes for the new film.

There's no news from Warner Brothers if the reports are true, or if composer John Williams is still involved.

He penned the theme music for the earlier films and also wrote the music for films like Star Wars, Superman and Indiana Jones.

The Sun newspaper reckons Jarvis has brought in to write new theme music to make the film more funky.

And Franz Ferdinand could be on the screen as well, as they also told Radio 1 they've been asked to be in Goblet of Fire too.

It's thought they could be asked to step into the shoes of Yule Ball band the Weird Sisters.

Updated 21 October 2004, 20.07

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