Former JLS star Oritse Williams tried to have sex with a "spaced out and zombified" woman and then raped her when she returned to his hotel room to look for her phone, a court has heard.
Williams denies raping the woman, who cannot be identified for legal reasons, after she met him at a nightclub following a solo concert in December 2016.
A jury at Wolverhampton Crown Court was told Williams, who enjoyed chart success after shooting to fame on The X Factor in 2008, was arrested at a hotel in the city after the concert.
The 32-year-old, of Croydon, south London, is standing trial alongside his tour manager Jamien Nagadhana, who denies charges of sexual assault and assault by penetration in connection with the same incident.
Opening the case against the men on Tuesday, prosecutor Miranda Moore QC said Williams claimed the woman had "instigated" sexual activity after taking a taxi back to his hotel.
Prosecutors allege that the rape took place after the woman and two of her friends had met Williams and Nagadhana and been given free drinks at the nightclub.
The victim – who said she felt sorry for Williams during the concert – and her friends approached the singer "for a joke" in the VIP area of the club, the court heard.
Initially, conversation between the women and Williams had centred on one of the alleged victim’s friends, who the singer had said "should be a Victoria's Secret model".
After one of the women vomited and had to be put in a taxi home, the alleged rape victim and her remaining friend went back to the hotel with Williams and Nagadhana, the court heard.
Ms Moore told jurors: "All three of the women began to feel a lot more affected by alcohol than they felt was normal. They all began to feel odd."
Adding that one of the women felt she had been drugged, Ms Moore told the court: "That was her feeling but there is no forensic evidence to support that."
The prosecution claims Williams attempted to have sex with the complainant "almost as soon as they had got into" the hotel room but she had made it clear she did not want to have sex and left.
Ms Moore said a hotel worker had remembered the two women as being "spaced out and zombified" and also described them as being "not properly with it".
Describing how the woman went back without her friend to look for her mobile, Ms Moore said: "Once she was back in the room – she had to knock on the door – Mr Williams effectively jumped on her.