R. Kelly has a "dark side that the public don’t know about that, prosecutors said at the opening of his second federal trial.
The singer was found guilty of sex racket in a New York court last year.
He was sentenced to 30 years for this.
A separate trial began on Wednesday on charges of child pornography and obstruction.
His lawyer urges the jury not to consider Kelly "a Monster"
Kelly, real name is Robert Sylvester Kelly.
Kelly has 13 charge
Including creating and receiving child pornography.
In 2008, he was charged with bribing and intimidating witnesses.