In 2003, Kelly was arrested in Florida on child pornography charges after investigators said they found photos of him having sex with a girl. Charges were dropped after a judge ruled detectives illegally seized the photographs from a digital camera in his home.

Documents show Kelly secretly married the singer Aaliyah in 1994, when she was 15. The marriage later was annulled by her parents; Aaliyah died in a plane crash in 2001.

The trial's six-year gap from indictment to trial is uncommon in child porn cases. But while suspects have a right to demand a swift trial, they're not obligated to ask for one, especially if they calculate that speed isn't in their best interests.

In Kelly's case, more than 30 pretrial motions contributed to delays. At one point, hearings were delayed when Judge Gaughan fell off a ladder at home and suffered multiple fractures. By the time he recovered, Kelly needed emergency surgery for a burst appendix.

Despite his legal troubles, Kelly — who rose from poverty on Chicago's South Side to become a superstar singer, songwriter and producer — still retains a huge following, and his popularity has arguably grown since being charged in 2002. The singer has released more than half a dozen albums, most of them million-sellers. He's also had a multitude of hits and gone on tours. His campy video series "Trapped in the Closet" have a cult following so strong that the Independent Film Channel premiered the latest chapters of the farcical musical, out on DVD, on its web site last year before showing them on the network. Kelly has a new song, "Hair Braider," out now, and is due to release a new album in July.

Although he won a Grammy in 1997 for the gospel-like song "I Believe I Can Fly," his biggest hits are sexually charged songs like "Bump N' Grind," ''Ignition" and his current single.

The trial is expected to draw crowds of reporters and fans to the courthouse. But Gaughan is expected to keep a tight rein on the proceedings, from which cameras, cell phones and recorders are banned.

When a fan snapped a picture of Kelly with her cell-phone camera during a pretrial hearing last year, Gaughan sentenced her to five days in jail and ordered her phone destroyed.

"He's not one of those guys who's going to let this trial turn into a circus," said Helfand.

Copyright 2008 The Associated Press.