[7] Their recordings include one side of a shared single, "Witchen Kopf" (1982), and "Hellbelly" which appeared on a various artists' compilation, This is Hot (1984).

[7] Seymour also worked as a set designer of films including, The Leonski Incident (1984), and on the TV series, Carson's Law.

[5] At the end of 1984, he auditioned with "a long line of bass players" to become a founding member of The Mullanes alongside Neil Finn on lead vocals and Paul Hester on drums (both ex-Split Enz).

[8][9] As a member of Crowded House, Seymour provides bass guitar, backing vocals and song writing, as well as artwork for album covers, costumes and stage sets.

[2] With their second album, Temple of Low Men (July 1988), he won the ARIA Music Awards of 1989 category for Best Cover Art.

[5] According to music journalist, Ed Nimmervoll, Seymour's departure was due to Finn blaming him for causing the latter's writer's block.

[2] In 1986 Seymour, Finn and Hester were also members of The Rock Party, a charity project for The National Campaign Against Drug Abuse (NCADA), which included many fellow Australasian musicians including Finn's older brother, Tim Finn; GANGgajang members Geoff Stapleton, Robbie James and Mark Callaghan; Models members Jenny Morris and Sean Kelly; Reg Mombassa (Mental As Anything), Eddie Rayner (ex-Split Enz), Mary Azzopardi (Rockmelons), Andrew Barnum (Vitabeats), Lissa Barnum, Michael Barclay, Peter Blakeley, Deborah Conway, Danny De Costa, Greg Herbert (The Promise), Spencer P Jones, John Kennedy, Paul Kelly, Robert Susz (Dynamic Hepnotics) and Rick Swinn (The Venetians).

[6] After Crowded House separated in November 1996, Seymour joined former bandmate Peter Jones (who had replaced Hester in 1994) in a pop rock band, deadstar.

[12][13] At that time, Seymour had worked on his brother Mark's debut solo album, King Without a Clue (October 1997), alongside bandmates Jones and Palmer.

In 2007, Neil Finn, Mark Hart and Nick Seymour reformed Crowded House, adding Matt Sherrod as drummer.