His work, which stems from graffiti, is made up of geometric shapes that interact with architecture and street furniture. By invading the public spaces in which he works, he aims to change passers-by's apprehension of urban space. Like the tags that swarm the city's walls and bring it to life, Erell's art is multiplied to interact with architecture. Her work can be seen in Paris, Marseille, Lyon, Bordeaux, Berlin, Prague, New York and San Francisco.

To mark the Olympic Games, artist Ërell was invited to the Fluctuart floating urban art center to create a monumental fresco of over 200m2 using Flashe Lefranc Bourgeois paint. The work demonstrates Flashe's matte finish and multi-support covering power.