Blue is a British boy band formed in 2000, consisting of members Antony Costa, Duncan James, Lee Ryan, and Simon Webbe. They gained fame with their catchy pop songs and harmonies, quickly becoming a household name in the UK and beyond. Their debut album, 'All Rise,' featured hits like 'All Rise' and 'Too Close.' The band represented the UK in the Eurovision Song Contest 2011, finishing in 11th place. After a hiatus, they reunited and continued to release music, maintaining a loyal fan base. Their blend of pop and R&B has left a lasting impact on the music scene.