Each track in this beautiful pairing of strings through cello and electric guitar is named after nature, the title referencing a brown-eared bat, as the Berlin duo of guitarist Olaf Rupp and cellist Ulrike Brand intertwine in an unhurried series of dialog that prioritize natural fluidity, reflecting the confidence that nearly ten years working together has imbued to their improvisations.

Three string improvisers--Ulrike Brand on cello, Ernesto Rodrigues on viola, and Olaf Rupp on electric guitar--approach their instruments from all angles excepting the most traditional ones, from scraping and granulating to creating resonant sonic environments, an apt reflection of a journeying musician, enhanced by text and images in the CD package.

An unlikely pairing, cellist Ulrike Brand is best known for her work with John Cage and Giacinto Scelsi, while Olaf Rupp is a regular contributor in a variety of setting in the European Free Improv scene; here they join for an album of free improvisation, finding shared and gripping language in creative and uncommon approaches to their strings.