Rihanna is back on the radio waves!

The singer, 21, premiered her comeback single, "Russian Roulette" on Ryan Seacrest's KIIS-FM radio show in L.A. Tuesday.

Off her Nov. 23 album Rated R, "Russian Roulette" marks Rihanna's return to the music scene, four months after her ex, Chris Brown, was sentenced to 180 days of community labor for beating her before the 2009 Grammy Awards in February.

In July, Brown, 20, apologized for the incident, telling TMZ he was "ashamed" of his actions.

"I'm not going to sit here and make any excuses," Brown said. "I take great pride in me being able to exercise self-control and what I did was inexcusable. I am very sad and very ashamed of what I've done."

LOS ANGELES (Reuters) - R&B singer Chris Brown announced a month long "fan appreciation" tour on Tuesday -- the same day that ex-girlfriend Rihanna released a new single seen by some as evoking their stormy relationship.

Both Rihanna's single "Russian Roulette" and Brown's tour announcement were firsts since their relationship came to a violent end in February.

Brown, 20, was sentenced to five years probation and community service in August for a bloody attack on Rihanna, 21, on the eve of the Grammy Awards in February. He has since publicly apologized for the assault, but has remained largely out of the media spotlight.

Brown's record company Jive said the "Kiss Kiss" singer would play small venues in 19 U.S. cities starting in Houston, Texas on November 14.

Billed a "fan appreciation tour" it is intended to thank his followers for their support, Jive said.

A portion of the proceeds will be donated to a Los Angeles domestic violence intervention charity called the Jenesse Center, and an organization providing friendships and jobs for people with developmental disabilities called Best Buddies International.

Brown's new single "I Can Transform Ya" was released in late September.

Rihanna's first single from her upcoming album "Rated R", with rival label Def Jam Records, tells the story of a woman faced with a game of Russian roulette.

"You can see it through my chest/That I'm terrified/But I'm not leaving/I know that I must pass this test/So just pull the trigger," part of the lyrics read.

Rolling Stone.com described it as a "dark ballad" that ends with an ominous gunshot and "seems to find Rihanna singing about enduring a tumultuous relationship."

Both Brown and Rihanna were among the fastest rising R&B artists in the United States before the assault, which led to Brown losing several commercial sponsorships and triggered a national debate about violent relationships.

ABC will air the first interview with Rihanna about Chris Brown's assault conviction, The Associated Press reports.

The network will dole out Diane Sawyer's one-on-one with the Barbadian singer in three parts - on Thursday and Friday's Good Morning America and then on Friday's 20/20.

In August, Brown pleaded guilty to felony assault and was sentenced to five years of probation, six months of community service and one year of domestic violence counseling.

LOS ANGELES (Reuters) - Pop singer Rihanna is due to speak for the first time about the night she was beaten by her ex-boyfriend Chris Brown, saying in a TV interview that this could happen to anyone.

R&B singer Brown, 20, was sentenced to five years probation and community service in August for attacking Rihanna, 21, on the eve of the Grammy Awards in February. He has since apologized for the assault but has remained largely out of the media spotlight.

In an interview with Diana Sawyer due to be aired on ABC's program "Good Morning America" on Thursday and Friday this week, the Barbadian singer says Brown was "definitely my first big love."

"This happened to me ... it can happen to anyone," she told Sawyer according to a statement from ABC.

Brown and Rihanna were among the fastest rising R&B artists in the United States before the assault which led to Brown losing several commercial sponsorships and triggered a national debate on violent relationships.

Rihanna released a new single, "Russian Roulette," in October and her fourth studio album "Rated R" is due to be released by label Def Jam Records later this month.

"I went to sleep as Rihanna and woke up as Britney Spears," the 21-year-old pop star said in a new interview with Glamour. After the assault, Rihanna endured not only a private emotional battle but also a public battle with press, which elevated when a police photo of her bruised face was leaked on the web. "It was humiliating ... I felt completely taken advantage of," she says. "I felt like people were making it into a fun topic on the Internet, and it's my life."

Rihanna said she leaned on her family, friends and her faith."At some point you are there alone. It's a lonely place to be - no one can understand," the songstress says. "That's when you get close to God."

Rihanna also discussed other positives that have emerged from the dark situation. "I'm stronger, wiser and more aware," she said. "You don't realize how much your decisions affect people you don't even know, like fans."

Rihanna, who Glamour named its 2009 Woman of the Year, said she's looking for opportunities to use her personal battle to help other women. "Domestic violence is a big secret," she says. "I want to give as much insight as I can to young women... to help speak for them."

Rihanna is set to talk about Brown again with Diane Sawyer in a new three-part interview airing Thursday and Friday on ABC. Her new album, Rated R, comes out Nov. 23.

In her first television interview since she was assaulted by Chris Brown, Rihanna says it was "humiliating" and "traumatizing" to admit the incident happened and that it was "wrong" of her to take Brown back.

"That's embarrassing that that's the type of person that I fell in love with," the singer, 21, told Diane Sawyer on ABC's Good Morning America Thursday (the entire interview airs Friday on 20/20). "So far in love. So unconditional that I went back. It's humiliating to say this happened. To accept that? It's a traumatizing experience."

During the interview, she confirmed that Brown, 20, held her in a headlock twice and bit her on the ear and fingers the night before the Grammys.

"I stayed. I even went back after he beat me, which was wrong," Rihanna said. "But again ... I'm a human being and people put me on a very unrealistic pedestal. And all these expectations, I'm not perfect."

Rihanna - who drops a new album, Rated R, Nov. 23 - said she wanted to speak out now to help others who may be in similar situation.

"It's completely normal to go back. It's not right. I learned the hard way, but again, this is what I want people to know," she said. "When I realized that my selfish decision for love could result in some young girl getting killed, I could not be easy with that part. I couldn't be held responsible for going back.

"Even if Chris never hit me again, who is to say that their boyfriend won't? Who's to say that they won't kill these girls?" she went on. "These are young girls and I just

Rihanna said the past few months have been one of the "most lonely times" for her because "nobody understands what it's like."

Said the singer, "There are a lot of women who've experienced what I did, but not in the public. So it made it really difficult. I just felt like, 'Oh my God, here it goes, my little bit of privacy.'"

Meanwhile, Brown -- who was sentenced to five years of probation, six months of community service and one year of domestic violence counseling in August -- tells MTV News in a new interview that he still doesn't understand his actions.

"My thoughts [when I look back on it now] is like, 'Why did it happen?' Like, 'What was I thinking? What is wrong with you?' That's what I'm thinking with myself. That's what my thoughts are, basically, now," says the R&B musician.

He said he is ready to move on.

Said Brown, "It's like, 'How do we get past it? How do you, Chris' - talking to myself - 'how do you go from point A to point B? How do you learn from your mistakes, turn it into a positive and help other people with the situation, and at the end of the day become the person that you want to be?'"