Lassen's work pushes the boundaries in his relentless search to represent the space between reality and that which we cannot touch—the world of infinite data.

Undoubtedly an abstractionist, Lassen feels that his work is not based on anything in particular in the real world.  For him, the existentialism of painting has become his oeuvre.  It is important to realise with Lassen's work that there is a meditative quality—the result of seeing and feeling one's environment. Structures create frameworks on the picture plane for colour and tonal variation, while in his most recent work, high-key colour is applied, adding a frenetic dynamism.