Formed in Sligo, Ireland in 1998, Westlife emerged as a successful European boy band, drawing inspiration from predecessors like Take That and Boyzone. Despite limited traction in the American market, the group achieved significant popularity in Europe, selling over 40 million albums worldwide and charting multiple platinum-selling records in the U.K. Vocalists Shane Filan, Kian Egan, Mark Feehily, Nicky Byrne, and Bryan McFadden comprised the original lineup, with hits like "Flying Without Wings" and "Swear It Again" propelling their early success.

Throughout their career, Westlife maintained a strong presence in the U.K. music scene, releasing chart-topping singles and multi-platinum albums. Following Bryan McFadden's departure in 2004, the group continued to tour and release new material, including a tribute album to the Rat Pack and several successful studio albums. After a decade-long run, Westlife disbanded in 2012 following a farewell tour that culminated in a sold-out show at Croke Park Stadium in Dublin, Ireland. In 2019, the group reunited to release their 11th studio album, "Spectrum," featuring collaborations with artists like James Bay and Ed Sheeran.