A witness to R.’s ‘sick summons’

Disgraced R&B superstar R. Kelly once summoned a naked girl who was hiding under a boxing ring at his suburban Chicago home by snapping his fingers multiple times — then ordered her to give him and another man oral sex, a witness testified Monday.

The sickening scene was revealed during testimony by the first male victim of Kelly’s to take the stand at the singer’s sex crimes trial in Brooklyn federal court.

The witness, who is testifying under the pseudonym “Louis,” said he was abused by Kelly after the singer lured him to his suburban mansion in 2006 when he was 17 years old by offering to help kick start his career in the music business.

At Kelly’s house in Olympia Fields, the victim said he offered to carry bags for the R&B great or do “anything you need” in the hopes of launching his career.

Kelly responded by saying, “That’s not it,” then got on his knees, crawled to Louis and proceeded to perform oral sex on him, the witness said.

“I wasn’t into it,” Louis said. On another occasion at the singer’s manse, Louis said Kelly snapped his fingers two times to call a naked girl out from underneath a boxing ring. She then performed oral sex on them both, according to the witness.

Louis is testifying as part of a cooperation agreement with federal authorities for taking part in a scheme to bribe a woman not to testify against Kelly at the trial. Louis pleaded guilty in the case, which did not include the singer — born Robert Kelly — as a defendant.

Kelly has been charged with racketeering and violations of the Mann Act for allegedly leading an organization of his employees to find girls for him to sexually abuse in the Chicago area and across the country.

He’s accused of giving herpes to at least two of his victims, including Jerhonda Pace, who is now 28.

Pace testified at the start of the trial that Kelly once forced her to dress like a Girl Scout and put her hair in pigtails when he abused her.

She also alleged the singer once spat in her face and choked her until she lost consciousness — only for him to demand he give her oral sex after she came to.

Kelly has pleaded not guilty. He faces 10 years to life in

prison if convicted.With Wires