Gunnar Geisse's "Piano Concerto" is premiered on the present CD, adds a new facet to this genre as although the piano can be heard as a solo instrument, accompanied by a variety of orchestral instruments, only one instrument was actually played on this recording, which in turn is not a piano but an electric guitar.

Geisse developed the "laptop guitar", an extension of his main instrument (the electric guitar) to include the computer, which enables him to continue playing analogue on a digital level. He uses the software-supported real-time conversion of audio to MIDI data to control virtual instruments and samplers.

Geisse titled this album "Triptych". The last panel in this triptych, "rhythm changes", follows the two movements of the piano concerto. The work does not focus on a soloist-orchestral arrangement but on the laptop guitar itself. Instead of an imaginary orchestra, Geisse uses a series of sampled materials. Allusions to romanticism are replaced by insights into Charlie Parker's Anthropology.