What makes Don't Worry Be Happy by Guy Sebastian notable?

The song gained considerable attention for its uplifting message and catchy hook, becoming a staple in Sebastian's live performances. It also contributed to Sebastian's ongoing commercial success in Australia, solidifying his position as a leading pop artist in the region. By the time 'Don't Worry Be Happy' was released in 2011, Guy Sebastian had already established himself as a significant figure in the Australian music scene, following his win on 'Australian Idol' in 2003. This track marked a shift towards a more mainstream pop sound after his earlier, more R&B-influenced work, showcasing his versatility as an artist.