To unveil the game's cover art, Rockstar contracted artists to paint a mural on a wall at a secluded warehouse location, showcasing the art in a video on 28 November 2007. A third trailer was released on 6 December 2007, introducing some of the game's characters, such as Roman and Michelle. The trailer features the song "King Ring" by Russian rap artist Seryoga, which Rockstar felt captured the "melting pot mentality" of Liberty City. Dan Houser wanted the third trailer to capture the "visceral qualities" of the game, but focus less on the story, as the first two trailers had done. On 8 February 2008, five teaser trailers for the game were released, each showcasing a particular character or service within the game. Similar teaser trailers were later released in pairs on 21 February, 7 March, and 11 April. Another trailer, released on 27 March 2008, showcases some scenes from the game, such as a bank robbery and police chase. A television commercial from GameStop debuted on 1 April, focusing on the activities in Liberty City.