I'd love to see Obbligato live one day. That, red moon, Kimi ga Hikari, Destination Unknown, Kyrie, Sandpiper, Hanataba, Serenato, Utsukushisa, Hikari no Senritsu, Tsuioku, lirica, ARIA and Oblivious are the songs I really want to hear at some point in my life.
I had Konno when I saw them in Osaka, but no string quartet. That would make it truly amazing.