Anthony Braxton Septet
Accelerator Ghost Dance 2008 [no label, 1CD] Live at the Kursaal Chamber Hall, 43 Heineken Jazzaldia, Donostia, San Sebastian, Spain. July 25, 2008. Very good satellite broadcast.

...With a good broadcast sound quality, the septet are in fine form, with the pulse melody played with a hard brashness as Composition 348 is in a new class of GTM (Ghost Trance Music) that Braxton calls "Accelerator Whip", so it eschews the regimented pulse of the earliest GTM. Here, the score is decidedly chaotic in the absence of a central conductor, with each player overlapping another constantly with counter rhythms and melodies. There are quiet lyrical passages as well as moments when the instruments sound like angry animals in a forest.

Running over 62 minutes, you can hear this countless times without finding the same path that you thought you found the last time around. Indeed, Accelerator Ghost Dance is a dense musical forest worth getting lost in. - Philip Cheah

Reviewer Cheah is editor of BigO, the source of these tunes.

Also, and completely different, Philip Glass/Gidon Kremer
Violin Concerto/Symphony No. 7 [No label, 1CD]
Live at BBC Proms 37, Royal Albert Hall, London, UK, August 12, 2009. A BBC stereo broadcast.

Unlike the Braxton, which demands attention, this is good on headphones in your cubicle as you chug through the workday.

If these names are unfamiliar to you, Wikipedia can get you up to speed: Anthony Braxton, Philip Glass.