Vienna artist Klaus Filip plays music using nothing but sine waves produced with 'lloopp,' an improvisation software program he invented and continues to refine. Toshimaru Nakamura makes music simply by controlling a mixing board's internal feedback, inputting no external sounds. Two artists with highly individual playing methods, they came together to create this album of improvisational works. Two of the three tracks were recorded in a Tokyo studio in May of 2005, when Filip came to Japan along with trombonist Radu Malfatti. The third was studio-recorded the following June, when Nakamura in turn visited Vienna. The performances move along in a calm, detached manner, but also contain exquisite warmth and tension born of the whispering and murmuring of electronic sounds. A kind of sound that could only come from these two artists.