30 Seconds to Mars is an American rock band formed in 1998 by actor and musician Jared Leto and his brother Shannon Leto. The band is known for its anthemic sound, blending elements of rock, electronic, and orchestral music. They gained popularity with albums like A Beautiful Lie and This Is War, which feature themes of love, struggle, and self-discovery. The band's lineup has changed over the years, but the Leto brothers have remained at its core. 30 Seconds to Mars is also recognized for its visually striking music videos and elaborate live performances, which often include fan participation and storytelling elements.