Jay Wesley Watson is an Australian multi-instrumentalist, producer, singer and songwriter. He is best known as a touring member of the psychedelic band Tame Impala and as a co-founder of the psychedelic rock band Pond, with whom he's recorded ten albums. Watson also records solo material under the name GUM and, as of 2025, has released six solo studio albums under this name. He sometimes collaborates with fellow Pond member James "Gin" Ireland as the duo GUM & Ginoli, remixing songs originally recorded by a variety of different artists, and occasionally contributes production and mixing to the solo projects of fellow Pond members as well as other musicians. In addition, starting in 2023, Watson began collaborating with King Gizzard and the Lizard Wizard member Ambrose Kenny-Smith as a duo under the name GUM with Ambrose Kenny-Smith, releasing their first studio album, Ill Times, on 19 July 2024; a deluxe edition of the album was released on 28 March 2025.