My video "secret alphabets" is a mathematical entertainment film without didactic claim, a 3d fractal music video. It contains clips from the past two years and is also animated by the audio input. Some of the most modern rendering techniques like motion tracking or volumetric light are used and it should be quite unique in the genre of fractal animations at the moment. Even if no mathematical connections are explained here, the film conveys the aesthetics of some mathematical systems very well. It represents a technical peak of current possibilities in the artistic use of mathematical systems.