"Considering their shared history - basically growing up playing together with Chris Thile in the progressive bluegrass band Nickel Creek, followed by a multi-year residency as Watkins Family Hour in LA's Largo club - it's a wonder Sean and Sara Watkins never produced a purely collaborative project prior to the release of Brother Sister. This collection of ten tracks by two of acoustic music's most gifted artists is suffused with (...) synergistic energy and covalent bond ... Clearly evident across the seven co-written original songs and three covers is the impact of the Watkins Family Hour period, which served as a platform for experimental collaboration with artists such as Jackson Browne, Fiona Apple, Nikka Costa and Dawes. Whether gracefully melding vocal harmonies on 'The Cure' and Warren Zevon's 'Accidently Like a Martyr' or matching breakneck riff for breakneck riff on the two instrumentals, 'Snow Tunnel' and 'Bella and Ivan,' Sean and Sara Watkins represent a singularly formidable force".