NEW ORLEANS, LA - JUNE 28: Wayne Coyne reaches out to fans in celebration before the certificate for Most Live Concerts Perfo
Monica Mcklinski

Carly Rae Jepsen's going to be on an upcoming episode of 90210, the Beverly Hills, 90210 spin-off that doesn't seem to be going away. While this makes perfect sense for Jepsen being that she's one of the biggest pop queens du jour, fans might be surprised to learn that the franchise has a long and varied musical guest history (specifically at the Peach Pit After Dark, the "cool" club for the "older" crowd on the show).

Both versions—Beverly Hills, 90210 and 90210—have featured big pop acts, but they've also gotten a little bit weird in the musical cameos department. Take a look at our list of the five most random musical guests to hit 90210, and let us know what you think in the comments.

5.) Powerman 5000: Uhh, what? I don't know about you, but when I think of teen television drama, I definitely think of American industrial metal. Check out the clip of PM5K from a 1996 episode of Beverly Hills, 90210.

4.) Wild Orchid: Only true die-hards would know that before Stacy Ferguson (AKA Fergie) was the HBIC of the Black Eyed Peas, she was schlepping her wares as part of '90s R&B act Wild Orchid. Check out the girl group's performance of "Declaration" on a 1999 episode of Beverly Hills, 90210.

3.) Luther Vandross: No disrespect to Luther, he's a guilty pleasure of mine, but Mr. Vandross' signature blend of adult contemporary and R&B are much more fit for your dentist's office than the young and sexy Peach Pit After Dark. Watch Vandross' sultry cameo on a 1997 episode of Beverly Hills, 90201. (At the 3:30 mark.) 

2.) Kara's Flowers (later known as Maroon 5): Before Adam Levine was a buff yoga god posing (almost) naked for Cosmo UK, he was the frontman for a kinda-sorta emo band called Kara's Flowers. Check out the band's 1997 Beverly Hills, 90210 appearance before they changed their name to Maroon 5 and canoodled solely with supermodels.

1.) The Flaming Lips: What the...? Wayne Coyne & Co. have basically built their nearly 30-year musical career on being undefinable, but their appearance on Beverly Hills, 90210 threw everyone for a loop. Watch their trippy performance of "She Don't Use Jelly" on a 1993 episode.