The first edition was from Friday 8th until Sunday 10 October 2004, located in the Paradiso and De Balie in Amsterdam.

The program consisted of performances by Scott Johnson, Christian Wolff, Peter Adriaansz and Christopher Fox, as well as new performances of the work of Theo Loevendie, Steve Reich, Per Nørgård, Giacinto Scelsi and Frank Martin.

On 10 October, 60 guitarists played a piece by composer Gilius van Bergeijk directed by Otto Tausk.

The second edition, with the subtitle soul of the tone, took place between the 28th and 30 September 2007.

The locations are Bimhuis and Muziekgebouw aan 't IJ, both in Amsterdam.