Kiss 108 is one of the United States and New England's most prominent top 40 stations, notable primarily for its annual Kiss Concert, which draws some of the best-known names in the pop music business to Mansfield's Xfinity Center concert venue each spring. Morning DJ Matt Siegel has been a fixture on the Boston airwaves since 1981, and was briefly nationally syndicated during the late 1990s. Kiss 108 was also the flagship station for Open House Party Saturday hosted by John Garabedian, broadcasting from his house in suburban Boston, but on March 10, 2007, Kiss 108 dropped Saturday edition Open House Party and began a new show called The Saturday Night Mash-Up, and later, the syndicated Saturday Night Online (now Most Requested Live) hosted by Romeo, also heard on sister station WCOD-FM in Hyannis. The Sunday edition of Open House Party hosted by Kannon was broadcast shortly on Kiss 108, replacing the Saturday night show, until May 2008. Kiss 108 is the Boston affiliate for "American Top 40" and the "iHeartRadio Countdown".