The success of the two tracks led to Mac becoming Cowell's first choice producer and songwriter. '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 single has sold over 365,000 copies to date in the U.K. The song was performed live on Miss Teen USA 2000.

To date, 'Swear It Again' is Westlife's only single to have charted in the U.S., peaking at number 20 and number 75 on the Billboard Hot 100 Year End Chart in 2000. This made it the first of fourteen UK number-one singles. It moved to 182,000 units in the first two weeks of its release and spent 13 weeks on the charts. It peaked at number-one one in the UK singles chart for two weeks in May 1999. It was released on April 1999 in the United Kingdom and on February 2000 in the United States as the first single from their self-titled debut album Westlife (1999).

' Swear It Again' is a song by Irish boy band Westlife. Westlife - Swear It Again (Car Wash Version)-2 1.1.1 Swear It Again (Car Wash Version).

Lyrics lagu westlife swear it again