Social music game MXP4 has over 1 million active users

"MXP4, the first social music gaming studio, today announced that over 30 major artists are using MXP4’s first social music game for Facebook to engage fans, encourage viral distribution and increase purchases. Artists featuring MXP4’s Pump It app on their Facebook pages include Enrique Iglesias, David Guetta, Cheryl Cole, Tiesto, Nelly Furtado, Lloyd Banks, Adam Lambert, UnderOath, Duran Duran, Neon Trees, Ingrid Michaelson, 10 Years, Scorpions, iSquare, Tonic and more. In addition, Pump It exceeded one million active users in its first month with 40% sharing and competing against Facebook friends."

Source:  MXP4 blog, 20th January 2011