Los Angeles, California (CNN)  -- Singer Chris Brown earned a glowing probation report six months after he was sentenced to "labor-oriented service" for assaulting his pop star girlfriend, Rihanna, the judge said Thursday.



Brown, 20, sat silently in court Thursday afternoon as Los Angeles Superior Court Judge Patricia Schnegg reviewed his probation report.



"It looks like you're doing really, really well," Schnegg said.



The police chief in Richmond, Virginia -- where Brown is being allowed to complete his sentence -- reported that he had worked 32 days of hard labor, she said.



Schnegg said when she sentenced Brown that she wanted to see him do "actual physical labor, as opposed to some type of community service."



The report on his court-ordered domestic violence counseling said he had completed 17 out of 52 groups sessions, she said.



The agency running the sessions reported "you are participating and doing a very good job," the judge said.



The judge rewarded Brown by signing an order allowing him to again travel outside the United States for concerts.



When Brown returns to court on May 11, 2010, for his next probation progress report, he will be "way over halfway there" to completing his sentence, she said.



Brown was sentenced in August to serve five years probation and to spend more than 1,400 hours in "labor-oriented service" for the assault conviction.



Schnegg also put a restraining order in place, requiring Brown to stay 50 yards away from Rihanna, 10 yards if the two are at the same industry event. The judge issued a strict warning to Brown not to violate the order, which remains in place until 2014.



Brown was arrested after an early morning argument inside a rented Lamborghini on a Hollywood street on February 8, 2009.



According to Brown's probation report, the February argument began over an incident at a Beverly Hills party. An earlier, sworn statement by Los Angeles Police Detective DeShon Andrews said the incident began when Rihanna found a text message on his cell phone from "a woman who Brown had a previous sexual relationship with."



The pair argued while in the car driven by Brown, the police statement said. It went on to describe the assault in great detail, saying Brown punched Rihanna -- identified in the statement by her real first name, Robyn, and the first initial of her last name, Fenty -- numerous times and put her in a headlock, restricting her breathing and causing her to start to lose consciousness. He threatened to beat her and kill her, according to the statement, and he bit her ear and her fingers.



Eventually, the statement said, "Robyn F. began screaming for help and Brown exited the vehicle and walked away. A resident in the neighborhood heard Robyn F.'s plea for help and called 911, causing a police response. An investigation was conducted and Robyn F. was issued a domestic violence emergency protective order."



The detective said Brown sent a text message nine days later, apologizing.



Rihanna's injuries included cuts and bruises inflicted by a large ring on Brown's right hand, which he used to punch her, the probation report said.



"Officers at the scene observed numerous contusions and abrasions to the victim's face and forehead, as well as bruising to her left arm near the bicep," it said. "They also saw abrasions to her arms near both wrists and on her upper chest near her collarbone and around her neck. There were abrasions on her left leg and on the inside of her upper lips."



Rihanna declined to speak to the probation investigator, so the probation report's details were gathered from police detectives who interviewed her soon after the attack.



"He beat me up," Rihanna told the police, the report said.



Brown made a public apology in July in a video statement posted on his personal Web site.



"I have told Rihanna countless times, and I'm telling you today, that I'm truly, truly sorry in that I wasn't able to handle the situation
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