The Association for Cultural Equity, which takes care of the Alan Lomax archive, is releasing recordings made by Lomax of the 56th United Sacred Harp Convention. Lomax's recordings, made in 1959, are the first to be made of Sacred Harp singing in stereo, following previous failed attempts to record the music monoaurally.

Sacred Harp singing has its roots in the southern states of America, a form of a capella group singing which splits a group into altos, basses, trebles and tenors. The hymns are sourced from a hymn book The Sacred Harp, which was first published in 1844 and is still in use.

The 17 track compilation, United Sacred Harp Convention: The Alan Lomax Recordings, 1959 includes a number of previously unreleased recordings, including one of "New Jerusalem (299)" led by a 12 year old called Butch White. It's released on Global Jukebox records on 12 February. More details incoming here.

This one slipped under the radar: Felix Kubin has started a new imprint on his Gagarin label called Apolkalypso, which will release 7" singles. The releases will all be new work, pressed in limited editions of 100, with transparent screen-printed covers and inlays designed by the artists.

The first five releases on the label are by Dada Noise opera artists On + Barr, Jimi Tenro, Lary Seven and harpist Mia Theodoratus project Soft Focus, Adi Gelbart, duo Broca Areal and Meryll Hardt.

More details on the Gagarin site.

Will Shutes and Jess Chandler's have released the second issue of their poetry magazine Test Centre. This issue features poetry from Iain Sinclair, a typographical piece by Steve Moore and a short story by Lee Rourke, and is printed in an edition of 200.

Test Centre launched in 2011, and released its first LP at the beginning of this year – a spoken word release by Iain Sinclair, recorded on a walk around East London. The first issue of the magazine also included work by Iain Sinclair, plus fiction by Chris Petit.

The third and final round of acts for Berlin's CTM festival has just been announced. Previously announced Mark Fell will be playing a set as Sensate Focus, and on top of two free shows Terre Thaemlitz will be playing as DJ Sprinkles. Also added to the-line up are Mark Archer (one half of rave duo Altern 8), plus Andy Stott, Biosphere, Shed, Shackleton, Frank Bretschneider performing Kippschwingung, Powell, Samuel Kerridge, Evol, Greco-Roman Soundsystem, Theo Burt of The Automatics Group, Lorenzo Senni, Alec Empire, and oud lute player Khyam Allami with percussionist Vasilis Sarikis.

Also added are T404, Pharoah Chromium, Günther Schickert, Bader Motor, Nicolas Metall, Ravi Shardja, Cavern of Anti-Matter, Nicolas Moulin, Mykki Blanco, Kuedo, Frederic Rzewski, Lower Order Ethics, Half Girl / Half Sick, Soundwalk Collective, Zip, Sammy Dee, Jörg Franzmann, Reznik, Opium Hum, A Cell of One and WOW.

On 28 January, the festival's opening night, a series of free shows takes place. Carsten Nicolai's Soundstudio students will be DJing at WAU, and Pulse Lab II – Works For Wave Field Synthesis, a piece by Robert Henke's Masters students from his course at the Berlin's University of the Arts, will be installed in the rehearsal space.

Already announced for the festival are Dean Blunt, Atom™, Ghédalia Tazartès, Skream feat Sgt Pokes, Demdike Stare, Holly Herndon, Forest Swords, Pete Swanson, People Like Us, Felix Kubin, Gatekeeper, Diamond Version, Emptyset, Florian Hecker, Heatsick, Jar Moff, Keith Fullerton Whitman, Lee Gamble, Matmos, Myrninerest and others.

The 2013 edition of CTM takes place 28 January–3 February, across various venues in Berlin. Full programme preview here.

The Anthony Braxton bootleg we wrote about last month has now been released. The audio was recorded at the Carnegie Recital Hall on 10 June 1972, when Braxton was 27. It was made with two tiny microphones taped onto the arms of a pair of sunglasses, and is the only known recording of the solo performance.

It's available now, free for Tri Centric Foundation members until 15 January, or $6.99 (going up to $8.99 next month). More details here.

A documentary on Norwegian composer and vocalist Maja Ratkje is crowdfunding completion, titled Voice: Sculpting Sound With Maja Ratkje. The film maker IJ Biermann has been shooting with Ratkje (who was composer in residence at this year's Huddersfield Contemporary Music Festival) for four years, and it's his fourth feature film.

Rewards for pledges run from downloads of exclusive footage from the cutting room floor, tickets to the premiere, all the way up to a concert with Ratkje anywhere in Europe. The money raised will be used to pay an editor and sound editor. It will also cover the costs of releasing the film on DVD and for a final trip to Norway to film with Ratkje. Biermann is aiming to raise $15,000, and at time of writing had made just under $3,400. Watch a trailer below, and more details here.

Voice mood trailer 2012 from ijb on Vimeo.

An app of Rework, the album of Philip Glass remixes, has been released as an app. The app is built by Snibbe Studio, who also developed Björk's suite of apps for Biophilia. It contains interactive visualisations for 11 tracks from the release, plus the Glass Machine: a music making app based on sounds from Philip Glass's early works.

Rework includes remixes of Philip Glass by Beck, Tyondai Braxton, Amon Tobin, Cornelius, Dan Deacon, Johann Johannsson, Nosaj Thing, Memory Tapes, Silver Alert, Pantha du Prince, My Great Ghost and Peter Broderick. The app is availble for iPhone and iPad. More here.

Thurston Moore has said that his Fender Jazzmaster guitar was stolen from the bar of the Best Western hotel in Philadelphia on 12 December at around midnight. A Facebook post on the Sonic Youth page states that a police report has been filed, and asks that anyone approached with the guitar for sale contacts him. The black 1966 Fender is estimated to be worth around $20,000, but it should be easy to spot, plastered as it is in stickers.

More on the Sonic Youth Facebook page.

[via New York Post]

Illustrator Jake Blanchard (who designed the cover for Pelt's Effigy) has designed the latest Wire T-shirt. Get it in the shop now.

Price for each (including postage and packing): £20 for UK, £22 elsewhere. Subscriber discount: £2 off per shirt. Order it here.

Thurston Moore and Michael Chapman are heading out on the road on a fingerpicking tour of the UK in February next year. At each date on the eight stop run, the guitarists will be playing full solo sets followed by a performance as a duo at the end of the night. Playing in support will be Yorkshire based guitarist Dean McPhee.

Dates are as follows: London Southbank Centre Purcell Rooms (1 February), Norwich Arts Centre (2), Hebden Bridge Trades Club (3), Hull The Adelphi (4), Preston New Continental (5), Manchester Band On The Wall (6), Birmingham Glee Club (7), Bristol Colston Hall 2 (8). Full tour listing here.