If you could use a single song from their repertoire as a synthesis of the whole career of the band, which one would it be?
I know some easy choices would be Octavarium, 6DOIT, possibly Metropolis, mainly due to their length and epicness. So we'll restrict the choices to "short" songs.
To define what is short, let's establish the longest song in TA, A New Beginning is the longest of the shortest, so 7:41 is the maximum length allowed.
So, which short song (7:41 tops) would best characterize Dream Theater?
PS: A thread some time ago asked for the best song to introduce someone to the band. This is different, as it doesn't have to be accessible, but represent Dream Theater the best.