Natalie Maines doesn’t hesitate to make audacious moves, and wresting away “Mother” — Roger Waters’ hymn to oppressive maternal authority figures from Pink Floyd — is the biggest one on her first solo album. Maines takes the “Mother” from Pink Floyd’s The Wall and deconstructs it, emotional brick by emotional brick. She rebuilds the melody and radically alters the vocal intonation of the lyric to render it resilient enough for new interpretations. “Mother” becomes a plea for understanding; to come to terms with difficult relationships through love and trust. Which, among other things, could be heard as Maines’ attempt to reach out to Dixie Chick fans, both present and former, loyal and hostile.