Never ones to do things by halves the Le Guess Who? team's final announcement of additions to this year's line-up contains no fewer than 55 further acts joining an already highly impressive bill of world class performers.

Now included in the Sunn O))) Presents strand of the festival are The Quietus's John Doran, Hildur Guðnadóttir and a double dose of death metal from Virus and Bolzer.

The remaining new acts covered by the event's entry fee are as follows:- The Notwist; Yung Gud & Sad Boys; Atlas Sound; Islam Chipsy / EEK; Prefuse 73; Heems; Huerco S.; Lee Gamble (DJ set); The Besnard Lakes; Michael Price Trio; Bob Forrest; Mark McGuire; Masayoshi Fujita; The Weather Station; Widowspeak; Eartheater; Kodiak Deathbeds; Housewives; Sunflower Bean; Dan Friel; Car Seat Headrest; STUFF.; Saintseneca; Jack Name; Jessica Moss; Rami Zaidan; Elie Maalouf; Sahar Taha; Nâ Hawa Doumbia; Rats on Rafts; Dollkraut; The Homesick; Torii (recently on great form at Incubate); HOEK and Torus.

2015 also sees the festival bring into being a bunch of free shows under the headline Introducing. The bands performing over the weekend under that banner are as follows:- Hop Along; Hooton Tennis Club; Bully; J Fernandez; Terzij de Horde; thisquietarmy; Insect Ark; Younghusband; Grooms; It It Anita; Chantal Acda; Black Oak; Moon Moon Moon; Gnaw Their Tongues; Laster and Nefast.

Tickets for Le Guess Who? 2015 are available now here. 4-Day Festival Passes are available for €110; tickets for the Thursday program are €27,50 and tickets for Friday, Saturday and Sunday are €37,50 (excluding fees). Le Guess Who? and Festicket also offer festival ticket + hotel packages for the entire weekend.

At the end of 2013, ATP bid farewell to their signature UK holiday-camp events. So it's exciting news  that ATP will return to UK holiday camps this November.

ATP 2.0 Nightmare Before Christmas will take place in Prestatyn Pontins, North Wales. The site benefits from being in a far better location to a nationwide customer base, while still being within easy reach of international airports for non-UK attendees.

The first wave of acts to be announced are: Max Richter (performing The Blue Notebooks), The Notwist (performing Neon Golden), The Album Leaf (performing In A Safe Place), Holly Herndon, Dinos Chapman, Death, Loop, Ought, Blanck Mass, Iceage, Fumaca Preta, Andrew Hung, Sculpture, Younghusband, Vision Fortune and Grimm Grimm.

Curating this year comes from visual artists The Chapman Brothers, who return to ATP ten years on from their first stint. Jake Chapman said; “We are so honoured to have been asked to curate ATP again this November in Prestatyn. Ten years ago we curated the first Nightmare Before Xmas and lost so many brain cells that it's taken a decade to replace them. It is extremely special for us be involved again."

ATP takes place from Fri Nov 27 – Sat 29 2015. For more information click here.