Prosecutors played the sex tape at the center of R. Kelly's child pornography trial in open court Tuesday, just hours after opening statements in which they accused the R&B singer of choreographing and starring in a video featuring "vile, disturbing and disgusting sex acts" with an underage girl.

The jurors, who took feverish notes during opening statements, sat motionless while the video played. Their eyes fixed on a 4-by-4-foot monitor just outside the jury box. In the courtroom, the lights were dimmed and blinds drawn across windows. There were several other monitors in the room, including one facing the crowded gallery.

A grim, intent Kelly watched the whole video on a small monitor placed on the defense table, only occasionally averting his eyes. At times, the 41-year-old rocked in his chair or rested his chin in his hand.

Before putting the tape into a videocassette player, a prosecutor walked across the stately courtroom, held it out for the defense team to see and entered it into the record as "People's Exhibit No. 1."

The roughly 27-minute homemade video shows a man having sex with a young female, who is naked for most of the recording — except for a necklace with a cross dangling from it.