Creative Sources core artist double bassist Alexander Frangenheim met Zeitkratzer multi-reedist Frank Gratkowski, The Necks drummer Tony Buck, and free improvising vocalist Adachi Tomomi, in one of a series of concerts at the loft Studio Boerne 45 in Berlin in 2015; this, their first meeting, yielded an impressive flow of creative and far-ranging collective dialog.

Commissioned by Berlin's Maerzmusik Festival and premiered in 2014, Elliott Sharp's composition & soundscape is named after the Greek waking dream and inspired by John Cage, Sharp using a methodology to filter and process his musical manuscripts via Photoshop, which are interpreted through amplification of acoustic instruments by the Zeitkratzer ensemble.

Reinhold Friedl's Zeitkratzer ensemble and special guests, vocalists Svetlana Spajic, Dragana Tomic, and diple / gusle player Obrad Milic, explore the possibilities found in traditional Serbian songs from and about World War I, including the classic epic "Assassination In Sarajevo", and songs chosen specifically by Spajic and Tomic.

"Now, two duos with the participation of Udo Schindler, German multi-instrumentalist who has been paying particular attention to bass and bass variants of the clarinet, but also uses the soprano saxophone and, in "Empty Pigenhole", the ...

The trio of Frank Gratkowski on clarinets and alto sax, Michael Vorfeld on percussion, and Richard Scott on modular synthesizer, also known as Spectre, freely improvising in dramatic and generally reserved ways, intently focusing on sound and interchange.

A curious and remarkably enjoyable collection of works from Jorrit Dijkstra (sax, lyricon and electronics) in a quintet with Phillip Greenlief (reeds), Kyle Bruckman (double reeds & electronics), Frank Gratkowski (reeds), and Jon Raskin (sax & electronics).

NY based German-French bassist Pascal Niggenkemper in a European septet with reedist Frank Gratkowski, pianist Eve Risser, violist Frantz Loriot, vibraophonist Els Vandeweyer, voicals Emilie Lesbros, and drummer Christian Lillinger recording at the Loft, Cologne.

German reeidst Frank Gratkowski in a trio with West Coast percussionist Jerome Bryerton and bassist Damon Smith, in an album of free music that blends the sensibilities of free improv with contemporary compositional music.

Three West Coast saxophonists, Jon Raskin (Rova), Frank Gratkowsk (Zeitkratzer) and Phillip Grenlief, in a free improvising trio of highly interactive music using extended techniques to captivate and entertain the listener.

A live concert of Fields' Quite Large Orchestra (aka Multiple Joyce Orchestra) with Frank Gratkowski, Christina Fuchs, Thomas Lehn, Carl Hubsch, &c. &c. performing modular compositions for improvising chamber group, plus an homage to Merzbow.

Live recordings from the duo of saxophonist Frank Gratkowski and drummer Hamid Drake performing in New Orleans in 2009; amazing and far-ranging dialog from two masters.