Latitude reveal act for Sunday midday slot
Scala & Kolacny Brothers will play - full details
Scala, a 26-piece all-girl choir, and the two brothers, Stijn, a conductor, and Steven, a pianist, have been releasing albums since 2002, reworking songs by the likes of Metallica, Bjork, U2, Nirvana, Rammstein, Depeche Mode and Kylie Minogue.
They've recently gained wider attention after their rendition of Radiohead's 'Creep' was featured in the trailer for acclaimed film The Social Network.
On 7 June, full details will be announced via the Latitude website forum and its social media sites on how festival-goers can help choose some of the songs the collective will tackle during their set.
Previous midday performers include Thom Yorke, Joanna Newsom, and, last year, Tom Jones.
The National, Paolo Nutini and Suede will headline this year's event.
Latitude 2011 takes place at Henham Park Estate, Southwold, Suffolk from 14-17 July.
Weekend Camping Tickets are on sale now, priced at £170.