The artist collective MOSES & TAPS™, which has been cooperating since 2007, is well- known for its graffiti on trains and walls all over the world. The collective occurs under different names as for example TOPSPRAYER™ or ERNI & BERT™, in order to preserve their anonymity. Meanwhile, it is no longer clear how many writers work under these pseudonyms. The artistic careers of MOSES & TAPS™ began independently of each other in 1994. Similar thoughts and opinions about graffiti led the two sprayers 2007 together. The painting process is of importance for the collective. The painting process should always be a performance in which the body is used, so that the pieces get a kind of liveliness.