U.S. singer Alicia Keys appears on stage during the 2012 MTV European Music Awards show at the Festhalle in Frankfurt, central Germany, Sunday, Nov. 11, 2012. (AP Photo/Michael Probst)
U.S. singer Alicia Keys performs during the 2012 MTV European Music Awards show at the Festhalle in Frankfurt, central Germany, Sunday, Nov. 11, 2012. (AP Photo/Michael Probst)
U.S. singer Alicia Keys performs during the 2012 MTV European Music Awards show at the Festhalle in Frankfurt, central Germany, Sunday, Nov. 11, 2012. (AP Photo/Michael Probst)
U.S. singer Alicia Keys performs during the 2012 MTV European Music Awards show at the Festhalle in Frankfurt, central Germany, Sunday, Nov. 11, 2012. (AP Photo/Michael Probst)
South Korean Psy performs during the 2012 MTV European Music Awards show at the Festhalle in Frankfurt, central Germany, Sunday, Nov. 11, 2012. (AP Photo/Michael Probst)
British singer Rita Ora performs during the 2012 MTV European Music Awards show at the Festhalle in Frankfurt, central Germany, Sunday, Nov. 11, 2012. (AP Photo/Michael Probst)
Gwen Stefani, singer of US band No Doubt, performs during the 2012 MTV European Music Awards show at the Festhalle in Frankfurt, central Germany, Sunday, Nov. 11, 2012. (AP Photo/Michael Probst)
US singer Taylor Swift performs during the 2012 MTV European Music Awards show at the Festhalle in Frankfurt, central Germany, Sunday, Nov. 11, 2012. (AP Photo/Michael Probst)
British band Muse perform during the 2012 MTV European Music Awards show at the Festhalle in Frankfurt, central Germany, Sunday, Nov. 11, 2012. (AP Photo/Michael Probst)
