Rhythmus 21 was made in black and white, and spans for approximately 3 minutes.
[2] The films in this series get their name from their visual rhythmic element that closely resembles music.
Film ist Rhythmus) in 1921, but kept changing elements until he first presented the work on 7 July 1923 in Paris at the dadaist Soirée du coeur à barbe program in Théâtre Michel.
It was an abstract animation of rectangular shapes, partly inspired by his connections with De Stijl.
Founder Theo van Doesburg had visited Richter and Eggeling in December 1920 and reported on their film works in his magazine De Stijl in May and July 1921.