Boston-based singer-songwriter Marissa Nadler has been making old school country with a twist since 2004, but that twist has turned in many directions since then. It's led to her lending those trademark "haunting vocals" to metal bands, recording several albums of covers and opening up for Swedish hard rock band Ghost. In this session, Nadler talks about why she's a fan of harmonizing with women (her latest record 'For My Crimes' features vocals from Angel Olsen, Kristin Kontrol and Sharon Van Etten, among others), becoming more involved with producing and what it was like to play to a bunch of metal fans.