He has toured with Flogging Molly, Avatar, The White Buffalo, The Mahones and recorded with James Fearnley of The Pogues.

After some years of performing at home in Ireland, Walshe lived out most of his 20s in London where he also spent some time in a band with R. Roswell of Spacemen 3.

[4] In 2016, Walshe also released 'And Then You Cry' on The Monsters tribute album for Reverend Beat-Man's Swiss label Voodoo Rhythm Records.

[5] While in Nashville, Flogging Molly invited Walshe to perform on their 2017 Salty Dog Punk Rock cruise through The Bahamas.

[15] Other guests have included Steve Ignorant of Crass & John Sheahan of The Dubliners, Martin Carthy & Dónal Lunny.

He has appeared on bills with artists such as Del McCoury, Dr. Ralph Stanley, Ricky Skaggs, Peter Rowan, Ramblin' Jack Elliott, The Skatalites, DeVotchKa, NOFX, Jimmy "Duck" Holmes, Chris Bailey of The Saints, The Beat, Bonnie "Prince" Billy, The Blasters, Bobby Bare, The Sonics, Tír na nÓg, Scullion, Willie Watson of Old Crow Medicine Show, Paul Simonon of The Clash, Maolcolm Holcombe, the Melvins, Ray Wylie Hubbard, L. C. Ulmer, The Black Lillies, and many more.