It looks like the Chicago Quadio bluray box set was a success having sold out and going into a second run. Which Warner distributed (Warner/Reprise, Elektra/Asylum, Atlantic/Atco) act to you think deserves to have the follow up boxset. All groups must have had their albums released in quad back in the day, thus no nominations for Led Zeppelin, The Grateful Dead, or Abba. I pick the Doobie Brothers: The Captain and Me. Warner Bros. BS4-2694 Toulouse Street. Warner Bros. BS4-2634 Stampede. Warner Bros. BS4-2835 What Were Once Vices Are Now Habits. Warner Bros. WS4-2750 It's too bad that Rhino can't licence quad catalogs from other labels (like Universal and Sony) for release. Quadraphonic Discography "Popular Recordings - Complete List"