AthenaCL is an open-source, cross-platform, command-line program that functions as both a pitch (class) set theory utility (capable of both set and voice-leading modeling and analysis) as well as an object-orientated, Python-scriptable algorithmic front-end to Csound. Combining these features allows rapid and flexible scoring of Csound instruments with the elegance of Python-written texture algorithms. These simple algorithms allow the organization of pitch-materials by ordered content-groups, employing 12-tone set-class and pitch-class notations. Rather than writing its own music, AthenaCL is a compositional assistant: the algorithms create complex textural surfaces, leaving the limitless mixture and placement of these textures and their attributes entirely in the hands of the composer.