Arcade Fire have revealed that their forthcoming new album will be a double LP.

Pre-orders for the Reflektor album have opened up for the double album at Arcadefire.com, with the website stating that early orders will come with first access to ticket sales for special shows as well as the band’s forthcoming world tour. The album artwork – which features a sculpture by Auguste Rodin, from the Greek legend of Orpheus and Eurydice – has also been confirmed.

Meanwhile, Arcade Fire have launched their “Reflektor” single with a surprise show in Montreal. The band played the small Salsatheque venue under the alias The Reflektors on Monday night (September 9). CBC News reports that only 100 tickets went on sale for the show, which started at 9pm [ET]. Fans were asked to wear fancy dress to the gig – with Arcade Fire’s Twitter account stating: “Formal attire or costume MANDATORY. (Formal wear = suit, dress or fancy something…)”. The band also linked to the venue’s website, however this soon crashed, as the bandwidth limit was exceed due to the amount of fans visiting the site. Tickets for the show were $9, in keeping with the ‘9’ theme, which saw the single released on the ninth day of the ninth month. Record stores also began selling limited vinyl copies of the single, which was listed on the sleeve as being by The Reflektors, at 9pm last night.

Arcade Fire arrived at the venue wearing the oversized papier-mâché heads used in the video for ‘Reflektor’, which was unveiled a few hours before the gig. Click below to see CBC’s footage of Arcade Fire entering the venue and high-fiving fans wearing costume and fancy dress.

Yesterday [September 9], David Bowie confirmed he’d contributed “brief backing vocals” to the track.

The band also released two videos for “Reflektor”. The first appeared on the website, justareflektor.com. Produced by the band’s longtime collaborator Vincent Morisset, the film is “an interactive short film that explores the themes in Arcade Fire’s ‘Reflektor’ through two devices simultaneously: the computer and smartphone/tablet. Filmed in Haiti, where the band’s singer Régine Chassagne was raised, the story follows a young woman who travels between her world an our own.” The film was shot in Jacmel and features the track ‘Reflektor’ in full. Users must have the Google Chrome web browser to interact with the film.

Another video, directed by Anton Corbjin was also released. You can watch it below.