CNN:

The judge ordered the courtroom lights to be lowered and the blinds drawn. And then, the 25-minute sex tape at the heart of the R. Kelly child pornography case played Tuesday before a packed house: a Chicago courtroom.

R&B superstar Kelly sat expressionless as the tape was played. He's charged with 14 counts of child pornography and faces 15 years in prison if convicted.

Sketch artists were warned that if they drew any depiction of the acts on the tape, they, too, could be charged with child pornography.

On the tape, the man's face is seen only in profile, but the face of the alleged underage girl is plainly visible. At times she appears bored, and she rarely speaks, except when the man tells her to call him "Daddy."

After a variety of sex acts including oral sex, masturbation and urination, the video ends with the man appearing to tenderly wipe the girl off with a towel and then hand her some money.

The alleged victim, now 23, denies that she's the girl in the video. Kelly has denied that he is the man depicted in the tape.