Be different - take a festival break in Europe instead of the UK, and catch a different landscape. While artists in both new music and classical are constantly circling the world in search of more picturesque settings, you can find your alternative Glasto in Denmark or Belgium, or you can find favourite chamber musicians in Austria rather than London. theartsdesk brings you listings of this year's major European festivals: rock in Sonar, Sziget and Stradbally, opera in Bayreuth, Verona and Salzburg, dance in Vienna, Epidauros and Spoleto, visual arts in Istanbul, Zurich and Avignon. This is the indispensable clickable guide to a cultured break in Europe.