The biggest names in international rock and electro music hop from country to country between June and August, playing almost every weekend at events dotted across the continent.

Here is a list, far from exhaustive, of 22 of the best. Travellers are advised to buy tickets as soon as possible.

Belgium
Rock Werchter, near Leuven takes place from June 28-July 1. Rock Werchter has grown from modest beginnings as a small blues festival in 1975 to a massive four-day rock festival in 2007. Tickets are €75 per day.

This year's crowdpleasers? Muse, the Arctic Monkeys, Metallica, LCD Soundsystem and the Chemical Brothers.

Pukkelpop, near Hasselt takes place from August 16-18. Located near the border with Germany, this giant festival prides itself on its "alternative" beginnings and is run by a group called the Humanistic Youth of Leopoldsburg.

Tickets are €69 per day or €130 for three days. This year's crowdpleasers? The Smashing Pumpkins, Arcade Fire, Sonic Youth, Nine Inch Nails or Basment Jaxx.

Germany
Love Parade, unknown location, an unknown date — possibly August 25.

The world-famous Berlin Love Parade has run into problems again in 2007, but organisers are still promising an event, sadly not in Berlin, and on an as yet unspecified date. Check the website for news.

This year's crowdpleasers? Any of the vast number of loud, brightly decorated floats. There are no tickets for this free street event.

Britain
The Glastonbury Festival 2007, which takes place in southwest England from 21-24 June is so popular the organisers could probably organise two events on the same weekend and they would still sell out. Europe's biggest festival was enlarged this year to allow nearly 180 000 to join the fun, but all available places were snapped up in hours.

For the lucky few, tickets were about €220.

This year's biggest crowdpleasers? The Who, Bjork, Arctic Monkeys, Arcade Fire or The Killers.

The Reading Festival, west of London from 24-26 August is England's second-biggest festival, and promises a line-up almost as good as Glastonbury, guaranteeing hard decisions about who to see on which of the multiple stages. There is a parallel event with the same lineup in Leeds, northern England, on the same weekend.

Tickets are €220 for three days or €95 per day. This year's biggest crowdpleasers? The Smashing Pumpkins, Bloc Party, Razorlight, Arctic Monkeys or Red Hot Chili Peppers.

France
Rock en Seine, near Paris runs from 24-26 August and tickets cost €98 for three days, or €44 per day.

Created in 2003 to give the Paris region its own rock festival, Rock en Seine attracted 60 000 people last year and has been expanded to run across three days in 2007.

This year's crowdpleasers? Bjork, Tool, Faithless, Arcade Fire or Kings of Leon.

Switzerland
The Montreux Jazz Festival from 6-21 July is an annual highlight. Founded in 1967, many of the greats have performed on the festival's various stages. Misleadingly called a jazz festival, Montreux also offers reggae, rock and electronic music   often at high prices though.

This year's crowd-pleasers? Van Morrison, George Benson, Sly and the Family Stone, Norah Jones or Placebo.

Denmark
The Roskilde Festival, near Copenhagen, runs from 5-8 July. Scandinavia's biggest rock festival champions environmental causes, prides itself on its laid-back atmosphere and offers the chance to check out local bands and big name international acts.

Tickets are €200. The biggest crowdpleasers? Red Hot Chili Peppers, Bjork, The Who, The Killers, CSS or local electro act Trentemoller.

Austria
The Vienna Jazz Fest runs for a month from 25 June - 12 July and takes place in some of the Austrian capital's most famous buildings, including the Vienna State Opera, the MuseumsQuartier and the Town Hall.

The biggest crowdpleasers? Dionne Warwick, ex "Beach Boy" Brian Wilson, George Benson or Al Jarreau.

AFP