Four compositions for strings from German composer Hannes Lingens, including the three-part "Triptych" work performed by the Ensemble CoÔ, a septet directed by bassist Félicie Bazelair that emphasizes bowed strings; and two solo works performed by Bazelair: "Methods and Materials" & "Solo for String Instruments" employing advanced approaches to the double bass.

Created by Felicie Bazelaire, CoO is a string ensemble drawn from the French new music ensemble ONCEIM; CoO develops new repertoire for strings, collaborating with composers like Bertrand Denzler, who wrote this innovative composition "Arc" in two parts, a work applying unusual techniques to bowed strings, particularly lower bass tones, for fascinating results.