Gwen Stefanistepped into a time machine withJimmy Fallonandthe RootsonThe Tonight Showto perform her 2005 hit Hollaback Girl.

Stefani toldRolling Stonethat creating Purple Irises liberated her from a creative block.

It felt like I was repeating myself a lot, Stefani said of her false starts.

THE TONIGHT SHOW STARRING JIMMY FALLON – Episode 2058 – Pictured: (l-r) Host Jimmy Fallon and singer-songwriter Gwen Stefani with The Roots during “Classroom Instruments” on Tuesday, November 26, 2024 – (Photo by: Todd Owyoung/NBC)

Host Jimmy Fallon and singer-songwriter Gwen Stefani with The Roots during “Classroom Instruments” on Tuesday, November 26, 2024.Todd Owyoung/NBC

I felt like Im in the zone, this is it.