On TV: Nelly Furtado, Lily Allen, KT Tunstall

Pop acts on television this week include Nelly Furtado, who performs on ‘The Ellen DeGeneres Show’ on Monday; Lily Allen, who performs on ‘Late Night with Conan O’Brien’ on Tuesday; Regina Spektor, who performs on ‘Last Call with Carson Daly’ on Tuesday; parents of tween girls appear on ‘The Dr. Keith Ablow Show’ on Tuesday for help with their celebrity-obsessed daughters who emulate Britney Spears, Paris Hilton and Lindsay Lohan; K.T. Tunstall, who performs on ‘The Late Late Show with Craig Ferguson’ on Wednesday; Apples in Stereo, who perform on ‘Late Night’ on Wednesday; Hi-5, who perform on ‘Live with Regis and Kelly’ on Thursday; and ‘American Idol’ season five runner-up Katharine McPhee, who performs on ‘The Ellen DeGeneres Show’ on Friday.