The original version of 'Dynamite' - co-written by Ed Sheeran and Steve Mac - was released earlier this month.
The follow-up to 'Better Man', the hotly-anticipated new track was co-written by Ed Sheeran and Steve Mac.
Described as "old skool Westlife", the new track follows the Irish superstars' comeback single 'Hello My Love', released in January.
Westlife will also performed their new song live on BBC1’s 'The Graham Norton Show' tonight.
The new track was written and produced by superstar hitmakers Ed Sheeran and Steve Mac.
Mass-marketed music for the X Factor generation promoting attractive, clean-living male singers to teenagers looking for romance from their pop idols is not actually a new thing.