On TV: Ryan Cabrera, Maroon 5, Emma Bunton

Pop acts on television this week include Ryan Cabrera, who performs on ‘The Tonight Show with Jay Leno’ on Monday; Maroon 5, who perform on ‘Late Night with Conan O’Brien’ on Tuesday; former Spice Girl Emma Bunton, who visits ‘The Late Late Show with Craig Ferguson’ on Wednesday; The Pierces, who perform on ‘Last Call with Carson Daly’ on Thursday; and Jem, who performs on ‘Late Night’ on Friday.