Richard Perks is senior lecturer in music performance at the University of Kent, UK, and associate professor of music at the Institute of Contemporary Music Performance, UK. He is a leading exponent of the fretless electric guitar and has performed all over the world. Recent publications have explored the extended performance possibilities of the fretless electric guitar, guitar-focused musicology/analysis, the combination of composition with improvisation, and intercultural collaboration.

John McGrath is senior lecturer in music at the University of Surrey, UK, and deputy director of the International Guitar Research Centre (IGRC). He is the author of Samuel Beckett, Repetition and Modern Music (2018) and is also an active guitarist; recent appearances include a solo set at Kings Place, London, while his compositions have been aired and screened internationally.