 "Swear It Again" is notable for being, along with "Flying Without Wings", one of the first two songs that Steve Mac wrote for both Westlife and Simon Cowell.The success of the two tracks led to Mac becoming Cowell's first choice producer and songwriter.It was revealed that Cowell let his late father Eric Cowell listened to all of the songs recorded by the band at that time and decide what will be the debut single and "Swear It Again" was his choice.