Complex sentence: The group first performed at the 38th Annual American Music Awards to give the public of taste of what they will see on the tour, and again on 2011 New Year's on ABC's Dick Clark/Ryan Seacrest show.
Split into simpler sentences: The group first performed at the 38th Annual American Music Awards to give the public of taste of what they will see on the tour. They also performed again on 2011 New Year's on ABC's Dick Clark/Ryan Seacrest show.