Formed in 1998 by frontman Jared Leto and his older brother Shannon, Thirty Seconds to Mars found success in the 2000s with an evolving blend of alternative, pop, neo-prog, and hard rock. The band gained a modest audience with its debut album, but it was the platinum-selling sophomore effort A Beautiful Lie that officially opened the floodgates in 2005, securing the band a frequent presence on MTV while paving the way for a number of successful tours.