Purr marks the second project from childhood friends and born and raised New Yorkers, Eliza Callahan and Jack Staffen, who have previously released and performed music simply under their own names (Jack and Eliza). The songwriting duo formed Purr in 2017 while seniors in college. Taking cues from a lineage of dual-lead-vocalist bands with sonic roots in the late ‘60s and ‘70s, the pair fluidly oscillates between singing in harmony and unison with their voices often blending to forge what at times can eerily sound like a singular voice.