When I did my count, I just counted all the songs from the 13 studio albums to date, so A Change of Seasons, or any of the other non-album tracks, are not counted. Six Degrees and In the Presence of Enemies counted as one song each, and all 34 songs from The Astonishing (including the NOMAC tracks) counted, thus arriving at 136. This will make track 1 of Distance Over Time song 137.