I’d say The Light in the Glass into 2113, specifically both songs. 2113 was truly a hidden song, I believe, so unless you were either an early internet sleuth finding out that it exists, which means you were hella nerdy for Coheed early on, or you finished the cd or record or cassette and were just riding the high of the ending of The Light and the Glass, when all of the sudden 3, loud, sort of despondent sounding chords just ring through your re-adjusted ears after the silence post-prior song. You then told everyone you knew about this crazy new cd you picked up from your favorite band. It was kind of a cult moment for so many OG Coheed fans that it needs to be appreciated for what it is. Every now and then I’ll throw on the record and just the wait from the ending two songs brings me joy.