In the 2000s, Horn provided additional production on three international hits for t.A.T.u., "All the Things She Said", "Not Gonna Get Us", and "Clowns (Can You See Me Now)". He also produced the theme tune to the 2000 film "Coyote Ugly", "Can't Fight the Moonlight", recorded by Leann Rimes, co-wrote "Pass the Flame" (the official torch relay song for the 2004 Olympics in Athens) in collaboration with Lol Creme and co-wrote the title track from Lisa Stansfield's 2004 album "The Moment".