Pulp kicked off Hay-on-Wye and will play Homelands

Ozzfest is the first of four events at the Milton Keynes bowl this summer and should attract black-clad Heavy Metal fans in droves.

Black Sabbath and Amen will be there for the old school and, for the new generation, Slipknot and Papa Roach.

Sold out

On the Arts front, the hot ticket for Saturday is former US president Bill Clinton who will speak as part of the Hay-on-Wye literary festival.

That event has already sold out at �100 a ticket, but festival-goers can still see the likes of Margaret Atwood, Nick Hornby or Frank McCourt.

Music also features heavily this year at Hay - Pulp kicked off the festival on Thursday and Van Morrison and Suzanne Vega are set to appear.

The annual Glyndebourne opera festival is also under way. Tickets for its highlights Fidelio and Otello are also sold out, though returns are a possibility.

Still available at this countryside festival are tickets for Harrison Birtwistle's The Last Supper, an original retelling of Christian history or Mozart's Le Nozze di Figaro.

Glyndebourne runs till 26 August.

Catch up with Mozart at Glyndebourne

Classical fans can visit Aldeburgh on the Suffolk Coast in June for a festival that was started by Benjamin Britten.

Concert crush

Under the stewardship of brilliant young composer Thomas Ades, treats in store include The Rape of Lucretia and the Borodin String Quartet.

Another summer classical highlight is the BBC Proms from 20 July, offering music from John Adams to Vaughan Williams to Verdi.

It has more than 1,000 standing places for �3 each.

And for music-lovers who cannot face the concert crush, the concerts will be broadcast on BBC Radio 3.

Coming up later are the Fleadh in London, featuring Neil Young and Aimee Mann, the Reading Festival with Eminem as the headline act, the Cambridge Folk Festival and Womad.

Catch up with the details of other music festivals on the BBC News Online Summer Festivals guide.