There will be a live performance of a piece called "Tessellations" for solo acoustic piano. The piece is continuous and lasts one hour. With the performance will be projected slide images of pentagramic tessellations. After this performance there will be a two-part illustrated talk. Part one covers the scales used in "Tessellations", their origins and how they are related to one another. The second part consists of visual ideas and how they are related to the piece. There will finally be an appraisal of the integral role that improvisation plays in this project.