There are multiple artists with this name: 1) An MC from Brooklyn, New York out of the Dugout studio, known for reaching ridiculous levels of lyricism.
2) A rock band from Tacoma, Washington: Drawing upon an extremely wide range of musical influences, from modern metal bands such as Converge to classics like Billy Joel, it is almost unbelievable that Cavalier, this Tacoma, Washington based 6-piece band, ended up sounding more along the lines of Third Eye Blind and Ben Folds. "The bands we had all been in previously sounded exactly like what everyone else was putting out.

Read more about Cavalier on Last.fm.