He's My Brother She's My Sister is a band formed in Los Angeles, California. This folk group has been influenced by a wide range of genres ranging from pop, country, and punk among others. Formed by actual brother-sister duo Robert and Rachel Kolar, the group now consists of five members. Rachel Kolar (Vocals & Percussion) Rob Kolar (Vocals & Guitar) Lauren Brown (Tap Dancing Drummer) Oliver 'Oliwa' Newell (Upright Bass) Aaron Robinson (Slide Guitar) Read more on Last.fm