This page hosts the list of what might be called Metronomy rarities! Even though some aren't really difficult to find on the net, they aren't b-sides or bonus tracks. There are collaborations, unreleased remixes, covers, or yes simply rare Metronomy tracks :)
Songs are sorted by year.
 Cat Funeral
A simple tune released as Joseph Mount on a rare triple vinyl album Souris Calle in memory of Sophie Calle's cat Souris.
 [unknown track] (Summer 08 DJ Set excerpt)
What appears to be a new song that Joe mixes at the end of his Summer 08 DJ set.
 Tony Primo and Nixxie - The Hardest Thing To Do
Behind those names hide Joseph Mount and Robyn. This song is a true gem made for the movie Partisan! Watch the video clip here.
 Old Skool (Live Debut, Alexandra Palace 5th December 2014)
Poor audio quality but it's interesting to hear this song played live (for the first time) one year and a half before its release!
 Marion Cotillard and Metronomy - Snapshot in LA
Great song produced by Joe with vocals from Marion Cotillard. This was made for a Dior promo video, watch it here.
 Marion Cotillard and Metronomy - Is She Really Going Out With Him?
Marion Cotillard teams up again with Metronomy to perform a Joe Jackson song for the 30th anniversary of CANAL+, watch the performance here.
 Here Comes The Sun (The Beatles Cover)
One of the recent live covers performed by Metronomy with Oscar singing. Check the Fav' Live Picks for their cover of Box Codax' Naked Smile which stands out more than this one in my opinion.
 Just The Way You Are (Billy Joel Cover)
A simple cover for Au Secours C'est Du Live! on OÜI FM Watch the video here. Typical little Metronomy acoustic tune.
 The Most Immaculate Haircut (Demo)
This was used as the music for David Wilson's Advent #13 video. Access the video here.
 Anna On Drums (Bicycle Film Festival Ident)
This faster, earlier version of Anna on Drums was used as their ident for their taking part in the Bicycle Film Festival. Watch the ident video here. I always thought this sounded like a demo/alternate of Love Underlined.
 Fascination Street (The Cure cover)
Not much to say. A cover for a Cure tribute album.
 Let The Spirit
This is the instrumentation of Roots Manuva's Let The Spirit. Pure Metronomy tune amirite?
 The Hula
Joe offered this tune for an animation competition. This is in the same vein as the Nights Out intro.
 Kate Nash and Metronomy - Ooh Maybe
From a private compilation album IIRC. A couple of other songs are supposed to exist: Noodles and Sick And Tired.
 Christmas Song
Literally a Christmas song made by Joe and Oscar. Lovely.
 Music for Specialten issue #13
A couple of tunes as soundtracks for the menus of issue #13 of Specialten DVD series. Really have that Black Eye/Burnt Thumb vibe.
 Scissor Sisters - The Other Side (Metronomy Remix)
A rare, unapproved remix by Joe. Typical of the remixes he made back then.
 U2 - The City Of Blinding Lights (Metronomy Remix)
Another rare and unapproved remix. Apparently refused straight away by U2 marketing. Too bad, it's a very good one.
 Bright Eyes - Gold Mine Gutted (Metronomy Remix)
Yet another rare and unapproved remix by Metronomy.
 Toxic (Britney Spears cover)
A very famous and excellent cover with the typical Metronomy sound of that era!
 The 3rd (Gescom Remix)
A very rare, unreleased remix by Gescom/Autechre. I always wonder why this went so overlooked... Autechre were early influence for Metronomy, so it seems like a nice thing that this associated act remixes one of Metronomy's first tracks. It was meant to appear on a 12" Pip Paine EP in 2004 on the label Anticat. Other song on this EP might have been Foe And Dear, then-titled Pip Paine. Nothing confirmed though. Would be nice to find that Anticat demo someday :)
 [untitled] ("Newer")
A Metronomy demo presented on TotallyWired radio by Gabriel back in The Customers days (Joe and Gabriel's previous band).
 Studio 54½
From here and below is the earliest era of Metronomy... This was released on a compilation named Psychokinesis
 Circa 2000
This is obviously a remix of something. No one knows what though. As googling lyrics turns out nothing, it might be a demo by The Customers or found spoken words like in Studio 54½ above.
A completely unknown song until its release in 2014 on NME's Metronomy Retrospective. Really weird.
 Circa 1999
Another one that's probably a remix of an unknown song. Though I suspect this might be The Customers' Morning Sickness (Metronomy Remix)?
 Early R+B
Another tune included on the Metronomy Retrospective CD. Somehow reminds me a bit of Boy Racers.