"Echelon" is the opening track on the 2002 self-titled debut album by 30 Seconds to Mars, marking the band's initial foray into the rock landscape. Led by frontman Jared Leto, the group blends alternative rock with electronic elements, establishing a sonic identity that would define their subsequent career. The song features a driving rhythm and atmospheric production that sets a tone of introspective energy, characteristic of the early 2000s indie-rock revival. While the album was initially released under the name 30 Seconds to Mars, it later became a cornerstone of their discography, evolving into a more polished sound on later releases like "This Is War." The track remains a staple of their catalog, reflecting the band's signature ability to merge melodic hooks with complex instrumentation.