Grouper is the solo project of American musician, artist and producer Liz Harris (born July 15, 1980). She has released material on her own label and other independent labels since 2005. Grouper released the critically acclaimed Dragging a Dead Deer Up a Hill in 2008, followed by five more records, including a two-part album, A I A, and the piano-led album Ruins. Her eleventh album, Grid of Points, was released in 2018. Grouper has collaborated with a number of other artists, including Xiu Xiu, Tiny Vipers (Mirrorring), Roy Montgomery, The Bug, Lawrence English (Slow Walkers), and Jefre Cantu-Ledesma (Raum).

Roy Montgomery (born 1959) is a composer, guitarist and lecturer from Christchurch, New Zealand. Montgomery's mostly instrumental solo works have elements of post-rock, lo-fi, folk and avant-garde experimentation. His signature sound might be described as atmospheric or cinematic, often featuring complex layers of chiming, echoing and/or droning guitar phrases. He is currently head of the Environmental management department at Lincoln University in New Zealand.Montgomery has played in several New Zealand bands since 1980, most notably The Pin Group, Dadamah, Dissolve and Hash Jar Tempo. He has also released solo albums on labels including Kranky and Drunken Fish.