 A white label remix featuring Craig David was also released in 1999.Working in studios across Europe and the United States, Step has written and / or produced tracks for a diverse range of international artists including Liberty X, HotCha, Willy Denzey, and Christina Aguilera.In the latter part of 2009, he co-wrote and co-produced the track Gotta Go, which features on "Overcome", the debut album from Alexandra Burke.