They were signed by Simon Cowell and are currently managed by Louis Walsh. In 2008, they were declared as Ireland's ninth-richest celebrities under 30 years old and 13th in general. They are the third biggest selling pop band worldwide and biggest selling band of the decade (2000-2009). They garnered 14 number one singles in the United Kingdom, the third-highest in UK history, tying with Cliff Richard and trailing behind only Elvis Presley and The Beatles. The band has also broken a few top records, including "Music artist with most consecutive number 1's in the UK" and the "Biggest selling arena act in the Wembley Arena". (See Westlife records)
Over years of their career, Westlife's music has evolved from teen pop to a pop sound, with an emphasis on ballads. All of the band members are songwriters, although most of their hits have been composed by external writers, most notably Steve Mac and Wayne Hector. (See Songs written)
On 1 June 2008, Westlife marked their 10th anniversary with a concert in Croke Park, Dublin which saw more than 83,000 fans attending the special occasion. Music Week revealed on their website that Westlife is the official third top touring act within the years 2005-2008, while they were 7th top touring act of 2008.
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