THE WOODLANDS, Texas (AP) — A country music singer has died in Texas after his manager says a revolver he was handling during a music video shoot accidentally discharged. Montgomery County Justice of the Peace Wayne Mack says 35-year-old Justin Carter died last weekend at his apartment in The Woodlands, north of Houston. Carter’s manager, Mark Atherton, tells KTRK-TV the singer was using the gun as a prop for a music video he was filming when it went off.