Bravo's "Watch What Happens Live" had some surprising guests on Tuesday. 
 
 Bravo's nightly talk show Watch What Happens Live, usually a coffee klatsch for castmembers of Real Housewives and other network stars, had some surprising guests on Tuesday (June 28): Bob Weir and John Mayer of Dead & Company. 
 
 5 Songs Dead & Company Should Debut This Summer 
 
 To the delight of host and longtime Deadhead Andy Cohen, the two musicians indulged fans' questions, including one who asked about the "sexual face" Mayer makes when playing guitar. Indeed, Mayer's guitar virtuosity is the stuff of legends and so is his expressive, ever contorting facial gestures as he plays along. 
 
 "I don’t mean to do the guitar face," Mayer defended, adding that the demands of the Grateful Dead's giant repertoire of songs cause him to make "an even more gnarly guitar face" as he tries to concentrate on nailing the next chord and many melodic twists and turns. "Not only [am I] lost in the music, I'm worried about falling off the bike," he said. "It's a pained sexual face." 
 
 Dead & Company, which also features original Grateful Dead members Mickey Hart and Bill Kreutzmann in addition to bassist Oteil Burbridge and keyboardist Jeff Chimenti (longtime Dead guest vocalist Donna Godchaux has also been sitting in for several songs) are currently in the midst of a stadium summer tour which touched down in New York City over the weekend at Citi Field. 
 
 With the Watch What Happens clubhouse nearby in Manhattan, a golden opportunity presented itself, it seems, and Cohen was downright giddy about it. 
 
 Other topics discussed during the show included their thoughts on feeling the late Jerry Garcia's presence; a new solo album by Mayer, which he said "will probably come out early next year," adding, "I’m almost done with it. I have to finish some vocals and then just mix it and it’s ready to go.” It was also revealed that Mayer finds Barbra Streisand, with whom he dueted in 2014 on the song "Come Rain Or Come Shine," "sexy as ever." (After the show, a bonus segment found the three discussing gay bars and out-of-body experiences.) 
 
 Back to obliging Cohen's fandom, Weir and Mayer played a snippet of Dead favorite "Friend of the Devil" on acoustic guitars to close out the 30-minute program. Watch the performance below: 
 
 Dead & Company next play Boulder Colorado's Folsom Field on July 2 and 3. ||||| Musician John Mayer and Quincy Jones mingle at the 55th annual Grammy Awards at the Staples Center in Los Angeles on February 10, 2013. On Tuesday, Mayer appeared on "Watch What Happens Live" and defended his "gnarly guitar face." File Photo by Jim Ruymen/UPI | License Photo 
 
 Singer and songwriter John Mayer arrives at the 57th Grammy Awards at the Staples Center in Los Angeles on February 8, 2015. Mayer appeared with fellow Dead & Company performer Bill Weir on "What What Happens Live" defending his "gnarly guitar face." File Photo by Jim Ruymen/UPI | License Photo 
 
 John Mayer (R) and Bob Weir perform the Grateful Dead classic "Friend of the Devil" on "Watch What Happens Live" with host Andy Cohen. Courtesy Bravo 
 
 LOS ANGELES, June 29 (UPI) -- Bravo's Watch What Happens Live surprised viewers by bringing in Bob Weir and John Mayer of Dead & Company for its Tuesday talk show, on which Mayer talked about his "gnarly guitar face" and his upcoming solo album. 
 
 In answering a question from the audience, Mayer defended his guitar face, often described as sexual and contorted, Billboard reported. 
 
 "I don't mean to do the guitar face," a defensive Mayer said. He said it's the demands of the Grateful Dead's enormous array of songs that cause him to make "an even more gnarly guitar face." 
 
 Concentrating on getting every chord perfect as the music mixes and twists, he said, causes him to make "a pained sexual face." 
 
 Not only is he lost in the music, Mayer said, "I'm worried about falling off the bike." 
 
 Host Andy Cohen asked them if they feel the late front man Jerry Garcia's presence when they perform as Dead & Company, Entertainment reported. 
 
 "In my imagination," Mayer said, "I better preface that by saying, there are moments where – I would never think to vocalize this or feel like I deserve to be able to vocalize this – but there are times when I go, 'You tell me what to do.'" 
 
 "I hear that in his playing," Weir chimed in. "He goes to the registers, for instance, that Jerry would. It's something you intuited." 
 
 As for Mayer's upcoming solo album, he said it will likely come out early next year. "I'm almost done with it. I have to finish some vocals and then just mix it and it's ready to go." 
 
 Cohen, whose love of the Grateful Dead is well documented, convinced Mayer and Weir to pick up their guitars. 
 
 Weir and Mayer finished out the segment with their rendition of The Grateful Dead's Friend of the Devil.
– Put off by John Mayer's "gnarly guitar face?" Blame the complex songs of the Grateful Dead. Bob Weir, of the Grateful Dead, and Mayer, of that one Taylor Swift song, appeared on Bravo's Watch What Happens Live on Tuesday. During the show, an audience member asked Mayer about the "sexual face" he makes while playing guitar, Billboard reports. According to UPI, Mayer said he doesn't mean to make the "pained sexual face," but it's brought on by the difficulty of the Grateful Dead's back catalog, which he plays as part of Weir's Dead & Company. "I'm worried about falling off the bike," Mayer said. In what is certainly good news for tabloids and female songwriters, ABC News reports Mayer also revealed he's ready to start dating again after his relationship with Katy Perry ended.