Created in 1998 in Los Angeles, California by actor Jared Leto and his older brother, Shannon, 30 Seconds to Mars initially began as a big family project. Matt Wachter later joined the band as bassist and keyboard player. After working with a number of guitarists, the three auditioned Tomo Milicevic to round out their official roster. After Wachter's departure from the band in 2006, the Leto brothers and Milicevic continue on as a trio with additional touring members.