"BLUE" is a particularly atmospheric documentary film, a music film with international jazz greats and the Cologne pianist Martin Sasse. The unconventional, atmospheric film takes us on a journey from Cologne, via Dubai, Tokyo and New York. Three hours of music enjoyment - with magical moments, musicians in open discussions, during rehearsals and on stage. A plea for spontaneous, authentic music. Thus, there are images that are not only associative, but also stand as a symbol for a lifestyle long believed lost; the uniqueness of a mood, a feeling, which unfolds a special power in the interaction with the groove of the music.