Mary Mary, the duo of Campbell and her sister Erica, has tallied three leaders. By Jim Asker Tina Campbell achieves her first solo chart-topper on Billboard’s Gospel Airplay chart (dated Jan. 18 ...

For nearly two decades, she and her sister, Tina Campbell, were a chart-topping duo. But stepping into the solo spotlight meant redefining who she was—musically and personally. "I had to see ...