Although she is nominally a 'Christian rock' artist, she has one foot firmly planted in the classic rock genre of belting out blues-inspired vocals with a most powerful delivery. For instance, check out her brilliant live cover of the Stones 'Gimme Shelter', where she invokes innuendos of spirituality in the song, and delivers it with the swagger and aplomb that Jagger would have been proud of.
The albums are Lessons of Love, Men and Angels, You are There(live)