Lewis began his career as a jazz purist, playing as a sideman for jazz artists like Wynton Marsalis, Cassandra Wilson, Elvin Jones, Jon Hendricks, and Roy Hargrove as well as performing as a member of the Lincoln Center Jazz Orchestra. However, he eventually became interested in rock music and embarked on a solo career as a crossover musician, quickly gaining recognition for his instrumental "Rockjazz" piano covers of mainstream rock hits like The Rolling Stones' "Paint It, Black" and The Killers' "Mr. Brightside". He released his first album of instrumental covers, entitled "ELEW Rockjazz Vol. 1", on his own label, Ninjazz Entertainment, in March 2010.