Natalie Maines of the Dixie Chicks confirmed Friday she will release her debut solo album, "Mother," on America's Columbia Records label May 7.

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"I wanted this music to be very different from the Dixie Chicks," Maines said in a statement.

"Lots of albums by lead singers might just as well have been made by the band, but I think this is very different from anything the Chicks could make. That separation and distinction was important."

The title track of "Mother" was initially released on "West of Memphis: Voices for Justice," the soundtrack for "West of Memphis," a documentary about three Arkansas men imprisoned as teens for 18 years after being wrongfully convicted of killing three 8-year-old Cub Scouts.

The men were released from prison in 2011 after an investigation concluded they didn't get fair trials.