In 2001, Roundhouse Entertainment launched with their inaugural A Day On The Green concert, which has become an iconic festival series in Australian wineries and has featured the likes of Hall & Oates, Tom Jones, Elvis Costello and Alicia Keys.

[9] Michael Gudinski's son Matt got his start in the family business in 2002 with the launch of his Illusive Sounds label imprint and touring company at the age of 18.

Illusive's label has distributed Bliss N Eso, Owl Eyes, Clubfeet, Stonefield, Diafrix and Lowrider, while their touring division has brought out AlunaGeorge, Bruno Mars and Mark Ronson to name just a few.

The year afterwards, Ivy League Records (home to Cloud Control, The Rubens, Josh Pyke and Alpine) joined the fold.

2006 saw the opening of an international label arm, Liberator Music, with a roster that includes Phoenix, Bloc Party, Dizzee Rascal, Tiesto, Local Natives and Chvrches.

[10] In 2012, Michael Gudinski was honoured by his home city of Melbourne and named Melburnian of the Year for Mushroom's contribution to the local music scene.

[11] In 2013, Mushroom Group celebrated its 40th anniversary with an event at Thousand Pound Bend featuring performances by Alt-J, British India, City Calm Down, Clubfeet, Owl Eyes, Snakadaktal, The Rubens, Vance Joy, and World's End Press.

The year was capped off by the announcement that Future Entertainment joined Mushroom, which makes it currently the largest 100% Australian owned festival entity by virtue of ticket sales.

[13] In March 2017, Mushroom Group appointed Chris Maund as Chief Operating Officer for its labels and publishing divisions.