Musician Linda Gail Lewis is claiming unfair dismissal
The world famous musician - who asked the employment tribunal to grant him anonymity because of the allegations of sexual misconduct - will learn later this week whether he is to be identified by the media.
American-born singer and pianist Linda Gail Lewis, who now lives in Penarth, near Cardiff, is claiming sexual discrimination and unfair dismissal by the unnamed star.
Cardiff Employment Tribunal was also told that the eight-times married mother-of-four is claiming £20,000 in damages for earnings she claims to be owed.
The star has denied sacking Miss Lewis, claiming all members of his band were self-employed.
At an earlier hearing the 54-year-old accused him of "trying to ruin my life" and humiliating her on stage during a world tour.
Ms Lewis - who began her career aged 14 alongside her brother - has toured with stars including Fats Domino and Shakin' Stevens - neither of whom are implicated in the case - during her long career.
But she claimed she was sacked with three months to go on a tour of America and Europe.
"He is a legend and very popular with a great reputation," she told the tribunal.
"Performing with him should have raised my profile but it didn't.
"What I didn't realise was that he was trying to ruin my career and life."
The star had even asked her to divorce her husband and when she went home for Christmas 2000 not to have sex with him, Miss Lewis told the tribunal.
However, the star's promoter - who cannot be named to protect the star's identity - said Miss Lewis had made a "commercial decision" to give the star's concerts priority over her own.
"He has never forbidden Linda Gail from working with anyone else," said the promoter.
Miss Lewis was entirely free to work with others, said the promoter, and he was aware she was continuing to perform her own gigs.
He also said that playing with the rock star was "potentially very lucrative" for Miss Lewis.
The bid to name the star involved was launched on Tuesday by barrister Joanne Cash on behalf of Mirror Group, Associated Newspapers and Ulster TV.
"In effect the press have been gagged," said Ms Cash.
"We are not dealing with a trivial matter here but one of significant public interest."
The star's lawyer asked for a deferral in the case, but tribunal chairman Philip Davies said: "The first opportunity to hear the case is Friday and in the interests of justice it cannot be put off."
The tribunal continues and the star denies all the allegations.