Myleene Klass to perform with such established artists as Lionel Richie, Celine Dion, Bradley Walsh, Blue and Atomic Kitten. At the end of 2001, Hear'Say appeared on the Royal Variety Performance. Subsequently, the group achieved a 37-date sold-out arena tour and performed numerous television guest appearances. Klass made many appearances with Hear'Say on TV and in live performances during 2002. The pop act's many promotional appearances during the year were also broadcast as part of their own TV shows, entitled "Hear'Say: A New Chapter in Full" and "The Hear'Say Story". In total, Hear'Say had four Top 10 singles including two number-ones in
Channel 4 and parts of the home counties, including the use of "Lost" and "Desperate Housewives" as part of the experiment, as US broadcasters such as ABC already have an HDTV back catalogue. On 10 December 2007, Channel 4 launched a high definition television simulcast of Channel 4 on Sky's digital satellite platform, after Sky agreed to contribute toward the channel's satellite distribution costs. It was the first full-time high definition channel from a terrestrial UK broadcaster. On 31 July 2009, Virgin Media added Channel 4 HD on channel 146 (later on channel 142, now on channel 141) as a part of