Stereosonic was an annual electronic dance music festival held in Australia in November and early December.

Stereosonic was held in Brisbane, Adelaide, Perth, Sydney, and Melbourne, attracting attendances of up to 200,000 patrons nationally featuring the biggest electronic artists in the world.

In 2013 Totem Onelove Group was acquired by U.S. based global electronic music company SFX Entertainment of New York.

[3] It was planned for 2018, but did not happen: "Due to unforeseen last-minute changes in artist availability, the partners involved in Festival X have agreed not to proceed with the 2018 event.

More news will follow on our future plans for FestivalX – stay tuned to the website and Facebook page for more information".

2011: The Sydney Stereosonic event was held with the incorporation of ANZ Stadium as the main arena, attracting a crowd of 70,000 people.

The festival promoters originally began working in Melbourne nightclubs[4] forming the company Totem OneLove, which was in turn purchased by SFX Entertainment in 2013.

[7] The Public Order and Riot Squad were called in after patrons attacked police who were trying to break up fights and to assist with other crowd management issues.

[10] In 2013, Stereosonic expanded to a two-day festival format across all five cities, enabling more than 50 international artists and over 300 local emerging Australian acts to perform.