Dead and Company in Concert - New York

Seen here of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bill Kreutzmann of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here Bob Weir , Mickey Hart of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bill Kreutzmann of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bill Kreutzmann , Bob Weir , Mickey Hartof Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bill Kreutzmann , Bob Weir , Mickey Hartof Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bill Kreutzmann , Bob Weir of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here Oteil Burbridge , John Mayer, Bill Kreutzmann, Bob Weir, Mickey Hart, Jeff Chimenti of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bill Kreutzmann of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bill Kreutzmann, Bob Weir, Mickey Hart of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bill Kreutzmann of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bill Kreutzmann of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bill Kreutzmann , Bob Weir of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bill Kreutzmann , Bob Weir , Mickey Hartof Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bill Kreutzmann of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bill Kreutzmann , Bob Weir of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bill Kreutzmann of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bob Weir of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bill Kreutzmann of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here Bob Weir, Mickey Hart of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bill Kreutzmann of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bill Kreutzmann , Bob Weir , Mickey Hartof Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bill Kreutzmann of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bill Kreutzmann , Bob Weir of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here Bob Weir , Mickey Hart of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bob Weir of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bill Kreutzmann of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bill Kreutzmann of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bill Kreutzmann, Bob Weir, Mickey Hart of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bill Kreutzmann , Bob Weir , Mickey Hartof Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here John Mayer, Bill Kreutzmann of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)

Dead and Company in Concert - New York

Seen here of Dead & Company in concert at New York's Madison Square Garden (MSG) on Sat. Oct. 31, 2015, in New York (Photo by Robert Altman /Invision/AP)