Klaxons are among the latest names to be added to the B'ESTFEST line-up.
The nu-ravers will be joined by Thievery Corporation, guitar wizard Santana and Ayo at the Romanian festival.
Today's confirmations join a bill that already boasts The Killers, Moby, Motorhead, Orbital and more.
B'ESTFEST 2009 will take place at the Romexpo Grounds in Bucharest, Romania from 1-5 July.
Tickets are on sale now priced at 270 RON (approximately 62 EUR) for a three-day pass. Day tickets are also available.
50,000 festival-goers are expected to attend this year’s event, which boasts three stages as well as a VIP hospitality villages, a games and entertainment area, food and drink stalls and chill out lounges with special green and beach zones.
The nearest airport to the festival is the Baneasa Airport, which is around 10 minutes taxi ride away from the site.