As their name suggests, this quartet's approach is determinedly experimental, and the tabula rasa of the title is the state of mind they seek to encourage in their listeners. By the time I reached the second disc of this double album, they had succeeded. I had given up trying to imagine what might happen next. In this inert state, I quite enjoyed hearing four very accomplished young jazz musicians, along with the strings of the Benyounes Quartet, creating fascinating patterns in sound. It could have continued forever without reaching any real conclusion. Puzzling, but beautifully played.