Ke$ha is a bad girl gone worse. Last night's makeup and glitter still liberally applied to her face, she's putting off the morning after by charging right into the next night.

Ke$ha (real name Kesha Sebert) is a California girl. With a musical family, she was probably bound to wind up on stage and in front of the camera but, credit to her, her rise has been hard-earned.

Before going to work on her debut album (due out next year), Ke$ha could be heard singing background vocals for Britney, Miley and The Veronicas and turning up in her pal Katy Perry's "I Kissed A Girl" video.

Now she's on her own, and by the looks of the video for her debut single, "Tik Tok," she plays as hard as it works. It's a down-and-dirty electro jam with Auto-Tune flirtations. Check out Ke$sha's "Tik Tok" video below, and watch Ke$ha's live MTV UK video performance.

Hot Chelle Rae is a people-pleasing endeavor so enamored with their female fans that they named their band after two of them. They're a Nashville quartet --  led by singer Ryan Keith Follese -- that make populist pop-rock with pristine production values and combine dance-y, sultry modern rock of The Cab and The Killers with the wide-screen production of bands like Queen or Journey.

Tracks like "I Like To Dance" (listen to it on their MySpace) are a perfect example of their appeal; raunchy guitars, huger-than-huge drums, even bigger chorus and come-on-lets-do-it-already lyrics. It ain't hard to see what Stephanie Pratt sees in them. Or what they see in Stephanie -- she makes a cameo in the video for "I Like To Dance."

Stay tuned for Hot Chelle Rae's Lovesick Electric, which hits stores Tuesday, Oct. 27!

If the name Jason Derulo doesn't sound like any hitmaker you know, then you're not one of the 15 million MySpace listeners the 20-year-old R&B chart-crusher claims. And you must not own a radio.

Jason Derulo's "Whatcha Say" track, produced by J.R Rotem, samples (and by "samples," I mean, "uses the entire refrain of") Imogen Heap's "Hide And Seek," but Jason pulled from his own brother's adulterous confessions when he penned the song. While it's unclear how Jason Derulo's brother feels about this kind of publicity, his little brother's a star -- "Whatcha Say" hit the number 1 spot on the iTunes Top 200 Songs at the end of September.

Thanks in part to some label signage by Kara DioGuardi (they rode to the VMAs together) we can expect a debut album from Jason soon enough. Get a hint of Jason Derulo's musical background on his MySpace with "Strobe Light," which you can expect to hear in the MTV movie Turn The Beat Around come 2010.

Watch Jason Derulo with Beluga Heights signee IYAZ on the VMA red carpet, and watch the source of his "Whatcha Say" inspiration -- Imogen Heap's "Hide And Seek" video. And watch for more Jason Derulo coming soon!

You may have seen P.O.S. pull off an astounding one-man-band take on Pearl Jam's "Why Go" earlier this year. It's an interesting look for the Minneapolis producer/MC. At once ingenious and virtuosic, it shows P.O.S. as a dude who owes as much to the god known as Eddie Vedder as he does to the god of Rakim.

P.O.S.'s music is largely a self-produced hodgepodge of abrasive noise and block-rocking beats wrapped up in a thoughtful, idiosyncratic flow that betrays his roots in the backpack/indie rap scene that thrived in the early '00s: P.O.S. releases music through one of that scene's cornerstone labels, Rhymesayers, the home to Atmosphere).

In the video below, P.O.S. declares there's no AutoTune in grunge, but for him, there seem to be no rules, period. He's a beat-juggling, sampler-punching, mic-rocking dynamo. His album, Never Better was released in February, and his video of the same name is coming soon, so be ready. Follow P.O.S. on Twitter at @YEAHRIGHTPOS and check out his Pearl Jam cover and his video for the track, "Purexed" below.

Who is Sliimy? It's an entirely valid question. But that very question might be one of the main reasons you heard of the French singer-songwriter. Sliimy first made a splash when his lilting, delicate cover of Britney Spears' "Womanizer" hit the internet.

Sliimy was then "discovered" by the gossip overlord Perez Hilton, who subsequently started asking (knowingly), "who is Sliimy" over his Twitter feed. This piece of viral trivia started people talking about the skinny, St. Etienne singer, following his twitter and keeping up with his every move and making his album Paint Your Face a cult fave.

Sliimy's music has a sunny, literate charm, imbued with an innate tunefulness that shines through in his buoyant pop arrangements and lovely singing. All this buzz has resulted in Sliimy being nominated for an MTV Europe Music Award for Best French Artist (along with former Buzz On subject David Guetta). If you like Phoenix, Lily Allen or Mika, you need to find out who Sliimy is ASAP.

Watch his "Wake Up" video, and check out his cover of Britney's "Womanizer."

Sliimy - Womanizer (Britney Spears cover)

San Diego five-piece Lights On just wrapped up a mini tour in Brooklyn -- their first visit as a group -- and just released the five-song EP, Waiting For The Heart To Beat. And if you ONLY have time for one track, it'd be "John and Anne," which is easily download-able with a little power of positive Googling (or just follow that link to Lights On's MySpace). With lyrics "Dear John," I figure the track would be breakup-centric, but "John and Anne" is more a plea for salvation.

Lights On's sound: You could almost compare them to The Stars; the package comes off quite retro, with dulled vocals that evocative of a grainy recording. There's also a little of The Raveonettes in there, but way toned down -- like someone grabbed the clanky-electronic-cacophony dial and turned it to medium-low. And there's a little of that Peter, Bjorn, And John a-haunting in there too. My only issue: HOW can I keep straight Lights, Hit The Lights, Francis And The Lights, and Lights On? Thankfully I have room -- and now love -- enough for all.

(Credit ©2009 by Gary Livingston)

So I get that music careers were on the menu at Casa Cyrus: Billy Ray, Miley -- don't forget brother Trace Cyrus of Metro Station -- and now we meet big sister Brandi Cyrus, through indie-pop trio Frank and Derol, (sometimes also referred to as The Band With Miley Cyrus' Older Sister in It -- kidding, kidding... I know Solange suffered her share of "That's great, but tell us about your sister" moments.)

Before joining up with Frank and Derol, 22-year-old Brandi actually played guitar for both Hannah Montana and for Miley's tour, so a musical novice she is not. And with chirpy vocals and downbeat electronic beats, the Frank and Derol trio -- which also consists of Codi Caraco and Megan Park of The Secret Life of The American Teenager -- are hardly churning out "See You Again" knock-offs.

Try "Back and Forth"'s mellow flow for the family differences. Frank and Derol does not shy away from its Cyrus connex or the Cyrus fanbase though -- Frank and Derol opened for Billy Ray this month at The House of Blues in Cali. Hey, it's a foot in the door...

Follow Frank And Derol on Twitter at @frankandderol.

Esser is a tough dude to Google. Lucky for us, he has posted this introduction on a site called Bebo:

Esser is a person not a band. I use a computer machine and some instruments to make popular songs. Most of my songs are in the key of E.

I have also put together that Esser is from London and wears his hair like the Slim Jim mascot. What I already knew is that Esser knows how to make the club get crunk. His designer blend of house, two-step, rock and outsider-easy-listening (which amounts roughly to a whimsical mix of Phoenix meets The Streets) has got the whole London underground on lock. He's also in the midst of his first U.S. tour, an abbreviated trip with stops in New York, L.A., San Francisco and Chicago.

To fuel the fire he ignited with his debut LP, Braveface, Esser now sporadically drops solid gold mixtapes for free on his website. (You can sign up for his feed RIGHT HERE.) I highly recommend that you do that if you expect to be entertaining anytime this summer. All you gotta to do to set a party off, is pop in an Esser mixtape and watch it burn.

Today's Buzz On is about DC-area band and Warped Tour alum Hotspur, who you might know without actually "knowing" you know them -- Hotspur's music has been featured on Next and The Hills. Buzzworthy intern and University of Oklahoma student Katie Parker saw the band perform at the Knitting Factory here in New York the other night and hung out with the guys after the show. Here's her report...

Maryland natives Hotspur mean business when it comes to the music business. In fact, four of the five guys in the band have music industry or music production degrees. They've learned a lot from their college days and brought the same energy to The Knitting Factory stage with handstands on keyboards and high-energy vocals.

Hotspur, however, insists they should know better, hence the title of their second full-length album, You Should Know Better By Now, out June 23rd.

"The album's title has to do with us being a band for four years and not quitting,” Joe Mach, lead singer and guitar player, said. "We've been in the music scene for awhile, and we should know better by now, but it’s something we’re not going to give up."

The band showcased several tracks from the new album, including their new single “Chandelier” -- a song about keeping a crush on a pedestal and the frustration that comes with it -- and their emotional love ballad, “Heads/Tails,” about a couple's decision to make a move to London or Paris.

Hotspur is currently touring the East Coast until July with special dates at several Hot Topics in Maryland and Virginia.

+ Watch Hotspur's "Chandelier" video below, and keep them on your radar.

(Credit: Andy Ryan)

Did you see The Hills last night? Holy ship. Is there a better show? I know this is neither the time nor the place, but I'm pretty sure Spencer Pratt is the most interesting person who has ever been alive. No offense, Franklin Delano Roosevelt, but homeboy went to therapy and became a different person. A sensitive person who is also a rapper. WHAT THE HELL?

Not only that, but as a barely-recovering Laguna Beach junkie, I am SO psyched for the return of Kristin Cavallari. Did you see her go straight for Justin Bobby?? What I wouldn't give to go to bed tonight and wake up in next year so all of my unanswered Hills questions would be answered already!

But enough about my "problem." Aside from Spencer's emergence from his cocoon of cruelty as a gentle butterfly, last night's big story was Lauren Conrad's departure. What was originally her spin-off, officially entered a new life of its own as she rode away from K-Cav and the Speidi extravaganza alone.

To mark the beginning of a whole new era, Hills producers brought in a whole new voice. They very wisely landed on young buck Tamar Kaprelian, whose fresh and honest single "New Day" has enough emotion in every note to knock the grass off The Hills. Look out, "Unwritten" by Natasha Bedingfield! It's a new day.

In the great tradition of reality TV, I'm gonna let Tamar Kaprelian introduce herself. Here are a couple highlights from her hand-written bio:

I am 22. Songwriting is the most sacred thing in my life. Classic Disney films influenced me as a kid, but my true love of music came about when I discovered Billy Joel and Paul McCartney. In love I fell.

My music chronicles my life, my relationships, my basket-case-ness, and my utter determination and drive to create an album that is real and true to me both personally and artistically.

I hope you enjoy my little musical offerings and songs.

Peace & love.

What a sweetheart, eh? Plays a mean piano, too. Keep an eye out for Tamar Kaprelian and catch her first single "New Day" in The Hills' Season 5 finale, starting tonight!

+ TONS More Brilliant Hills Coverage On Remote Control Blog