First birthday and the annual official (non-official) sonar party. To celebrate they've invited some of favourite Contra Flow players from the last 12 months to come back and rock the party... Bonobo (ninja tune) Seiji (bugz in the attic) zero dB (ninja tune / fluid ounce) Saffrolla (ninja tune / solidsteel) MeNeO (live) (fluid ounce) Pablo Valentino (faces records) Amazing 360 degree viusals by Random Preset and the RGB Corp. La Nau 11pm - 5am 12 Euros including a drink All you have to do is email with 'Bumbarrclarrt' in the subject line and they'll put your email address on a special guest list.