On TV: Ashlee Simpson, St. Vincent, Pet Shop Boys

Pop acts on television this week include:

DataRock perform on ‘Jimmy Kimmel Live’ (ABC) on Tuesday.

St. Vincent perform on ‘Jimmy Kimmel Live’ (ABC) on Wednesday.

Justin Bieber performs ‘One Time’ on ‘It’s On with Alexa Chung’ (MTV) on Wednesday.

Ashlee Simpson Wentz visits ‘It’s On’ (MTV) and ‘Late Night with Jimmy Fallon’ (NBC) on Thursday.

Pet Shop Boys perform on ‘Late Night’ (NBC) on Friday.