Thousands are expected at a concert Thursday night designed to raise awareness for missing IU student Lauren Spierer. It's called Shine 4 Lauren.
Organizers are asking everyone to take part in what they call a "shining moment". Everyone at the concert will be asked to download a flashlight app on their phones and to raise the glowing screens into the sky at the end of the concert.
Organizers said they're trying to keep the concert upbeat and positive.
Spierer has been missing now for more than three months. Police still have no solid leads on what may have happened.