The explosive sex abuse trial of legendary U.K. folk singer Roy Harper, best known stateside for voicing Pink Floyd's 'Have a Cigar,' is now underway. Harper, 73, has denied 10 charges of indecent behavior nearly 40 years ago with two girls.

The charges include four counts of assault, four of indecency with a child and two of having intercourse with an underage girl. One of his alleged victims was 11 in the mid-'70s, the other 16 in the early '80s. Nine of the charges stem from Harper's alleged relationship with the younger girl, supposedly at his home near Marden, Herefordshire, in England.

"He is a man of some undoubted musical ability and it is a matter of fact that he enjoyed a degree of fame in the '70s," prosecutor Anthony Potter told the court. "The allegations cover a time period which, to use his description to the police, was when he was on top of the world and really making waves in the music industry to a period when he was struggling with financial difficulties."

Testimony from the younger girl, now in her late 40s, was shown to the jury of six men and six women via video. She said she has attempted suicide more than once since the alleged assault. The trial is expected to last at least two weeks.

Harper, who was also the inspiration for Led Zeppelin's 'Hats Off to (Roy) Harper,' has released 22 studio albums. He vigorously denied the charges, originally filed in 2013. He's been free on bail.

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