Revellers play in the mud during the Sziget Music Festival on an island on the Danube river, Budapest in this August 12, 2007 file photo. Glastonbury in Britain may be a sell-out, but in the north and east of Europe from Denmark's Roskilde to Romania's B'esfest and Hungary's Sziget, the uncertainties of recession are making 2009 as a rock festival 'summer of love' a hard sell. To match feature EUROPE-FESTIVALS/ REUTERS/Laszlo Balogh/Files (HUNGARY ENTERTAINMENT SOCIETY)