30 years of Sónar: a close up of the festival's project area – South Plug

Inter-Galactic Sonar Communication Probe Vol.1, V.A. [Curated by Jyoti Naoki Eri]

30 years on: Dive into the daring history of Barcelona's Sónar Festival - Features - Mixmag

It took 30 years, but world's largest artificial reef built near San Diego nuclear power plant is finally thriving - The San Diego Union-Tribune

Sónar: 30 years of music, technlogy, and innovation - Electronic Groove

30 years on: Dive into the daring history of Barcelona's Sónar Festival - Features - Mixmag

Barcelona dreaming: Sonar Festival celebrates its 30th anniversary

Sónar - Wikipedia

Music Events - Club Singles

The Best Music Industry Events & Trade Shows Around the World

DAVE LEFEBRE: Prepping for Stage Seven and My Band's First Festival in Minnesota - Major League Fishing

30 years on: Dive into the daring history of Barcelona's Sónar Festival - Features - Mixmag