Bruno Mars set himself apart from many of his popstar peers, joining a small group of performers that have served simultaneously as host and musical guest on Saturday Night Live. Admitting during this week's opening monologue that he had no acting or comedy experience, the 27-year-old musician went on to prove such a disclaimer unnecessary, giving a solid performance from start to finish.

In one sketch, Internet radio service Pandora has an emergency that causes vocals from hit songs to go missing temporarily. The techs advise that the intern (Mars) is able to sing a believable Green Day, forcing him to duplicate lyrics live for listeners. Unfortunately, other channels start to go down as well--leading to the intern's covers of Aerosmith, Justin Bieber, Katy Perry and--one of Mars' greatest influences--Michael Jackson.

Mars also appeared in drag (pictured above) as a troubled teenaged girl on a talk show arguing with her equally troubled mother (played by Bobby Moynihan).

Tom Hanks made a cameo during the cold open, which of course spotlighted last week's presidential debate. He also appeared briefly in the Merryville Brothers halloween amusement ride sketch which featured Mars as a murderous animatronic figure.

Hanks also introduced Mars' first musical performance of "Locked Out of Heaven," the lead single off his upcoming Unorthodox Jukebox album, due out Dec. 10 via Atlantic Records. Later in the evening, Mars debuted a new song, "Young Girls," a performance that showcased just how much talent this young singer really has.

The next new episode of SNL airs Nov. 3, with host Louis C.K. and musical guest fun.

Watch videos below.

"Young Girls" performance:

"Locked Out of Heaven" performance:

"Pandora" sketch: