 Most of the shows on their tour involved opening for No Doubt, while some of their headlining shows featured opening act Hey Champ.The Sounds headlined a 2009 US tour with supporting acts Semi Precious Weapons and Foxy Shazam and a tour in Europe with supporting act Matt & Kim to promote their album, Crossing the Rubicon.In 2002, Ivarsson collaborated with Andreas Mattson in the song "Free Free Free" which was released on the soundtrack for the German film "Big Girls Don't Cry".