Natalie Maines of the Dixie Chicks performed for thousands of people -- many of who are outraged with Texas Republicans -- Monday at the Texas State Capitol.
Protesters on both sides of the abortion issue showed up as lawmakers returned for a special session.
They're considering a bill that, if passed, would become one of the most restrictive anti-abortion laws in the country.
Last week, Democrat Wendy Davis filibustered for more than 10 hours to prevent a vote on the bill.
Supporters say it will protect women's health and unborn children. Critics say it would shut down most of the state's abortion clinics.