Acts will join the likes of The Drums, Surfer Blood and Two Door Cinema Club at the New York event
French act set nearing the end of promotional duties for 'Wolfgang Amadeus Phoenix'
Band squeeze into shorter slot after technical delay
One day London festival also sees sets from Archie Bronson Outfit, Factory Floor and Chilly Gonzales
French group will play with Grizzly Bear and Girls on September 18
The eight-track album is a live version of their Grammy winning LP 'Wolfgang Amadeus Phoenix'
Recent Grammy winners to hit the road in April
Caribou and Beth Jeans Houghton also set to play London event
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French four-piece will now also play on March 30