In the live recording of "Cowboy Song" performed at the Sydney Opera House on November 30, 1977, Thin Lizzy was riding high on the success of their album "Jailbreak," released earlier that year. This album was pivotal in establishing their popularity, particularly due to the hit single "The Boys Are Back in Town," which helped propel the band into the mainstream rock scene. By this time, Thin Lizzy was on a significant upward trajectory, showcasing their blend of hard rock and lyrical storytelling, with frontman Phil Lynott at the helm. The inclusion of notable guitarist Gary Moore in this performance added to the band's dynamic, as he contributed to the distinct twin-guitar harmonies that Thin Lizzy is well-known for. The Sydney Opera House concert is often remembered for its energetic atmosphere and the band's tight performance, capturing a moment when they were becoming icons in rock history.