In 2007, MOSES met TAPS and they soon after formed the artist collective TOP SPRAYER.

Their first project was ambitious: to paint 1000 trains around the world in 1000 days, each using the other's name. The results of this adventure led not only to the first book of MOSES & TAPS™ INTERNATIONAL TOPSPRAYER™, the most commercially successful book on Graffiti to date, but also to a change in the practice of law in favor of graffiti artists.

MOSES & TAPS are known for their balance between the constant progress of graffiti and their conceptual strength. While most other urban artists want to please the crowd with coherent and aesthetic, yet harmless, paintings, MOSES & TAPS are still not afraid to scandalize.

The medium is the message and their messages are multiple. For this reason, MOSES & TAPS do not limit themselves only to canvases, galleries or aerosol works, they incorporate both public space and public transport in many of their works.

MOSES and TAPS are famous for their unique writing styles and their later development into quasi-abstract works of art.