French graffiti crew 123Klan composed of husband and wife duo Scien and Klor recently teamed up with a bunch artist friends from around the globe and took over a block in Brookyln in celebration of Scien’s birthday and the crew’s 20th anniversary. As a surprise to the co-founder of 123Klan, over 30 artists were invited to party with the graffiti artist and graphic designer couple.

After the festivities were through, the group of artists including the likes of Sen2, Nychos, Cope2 spent the next day painting a block around the streets of Brooklyn.

Check the footage filmed across the 2 days below.