David Letterman, who will retire as host of CBS's The Late Show on May 20, has given a preview of the guests to be featured during his final stretch of shows. Among A-list acting talent like Tom Hanks, Julia Roberts and George Clooney, Letterman's upcoming musical guests will include The Avett Brothers, Brandi Carlile, Elvis Costello, Tom Waits, Emmylou Harris, Norah Jones, and Mumford and Sons. According to CBS, "many more to be announced over the next few weeks." (CBS)

Jon Bon Jovi will be the executive producer of a new reality show, titled If I Wasn't a Rockstar. The show's concept sees high-profile stars in music and other fields stripped of the trappings of fame and returned to their hometowns as if they had never achieved the levels of success for which they have become known. Neither a network nor broadcast date has yet been announced. (Nova.ie)

Angela Watts, Spotify's Vice President of Global Communications, recently told Billboard magazine that "sleep" is one of Spotify's most popular playlist categories. Watts also revealed that pop singer Ed Sheeran is one of the most frequently appearing artists in Spotify users' "sleep" playlists, with seven of his tracks among the top 20 most popular tracks for relaxing. Also popular is Sam Smith, with three songs among the top 20 "sleep" tunes. (Billboard)

Among the many limited-edition vinyls coming available for Record Store Day is a limited-edition seven-inch featuring Stephen Hawking singing Monty Python’s “Galaxy Song” from the troupe's 1983 film, The Meaning Of Life. (Stereogum)

Speaking of Record Store Day, yesterday we reported on how the U.K.'s Official Charts Company began tracking vinyl sales. Statistics coming out of those new charts reveal that Arctic Monkeys' AM is the U.K.'s best-selling vinyl of the decade. The best-selling vinyl single of the decade is David Bowie's 2013 picture-disc reissue of "Life on Mars". (Nova.ie)

An apparent mix-up in communication with security at the Coachella Festival resulted in Justin Bieber being put in a chokehold and told to leave the grounds. Bieber was wishing to view a set by rapper Drake and was told the backstage area was at capacity, but shortly thereafter, Bieber was offered an escort into the limited-access area, thus causing the reported kerfuffle. (Billboard)

If Kanye West jumped in a lake, would you do it, too? Apparently enough people in Yerevan, Armenia, did just that. West punctuated a free outdoor concert by jumping into Swan Lake. When a host of fans followed suit, authorities pulled the plug on the event. (Rolling Stone)

Bill Arhos, a longtime executive at Austin, Texas, public-television station KLRU, has died at age 80. Arhos was among the creators of the long-running PBS music series, Austin City Limits. The first episode of the show was taped in 1974, and it featured a promising young singer-songwriter by the name of Willie Nelson. (Austin City Limits)