1. Ke$ha, Lady Gaga Rule Euro Charts

    February 04, 2010 7:59 AM EST Lady Gaga maintains pole position on Billboard's European Albums chart with "The Fame" (Interscope/Universal), but loses out to a new female frontrunner on European Hot 100 Singles, as her "Bad Romance" is replaced at No. 1 by Ke$ha 's " Tik Tok " (RCA…