“Reunion“
“Reunion” is an instrumental not about a school reunion, but rather a band reunion.
What’s envisioned in this song is what a previously-super tight band sounds like, years, or even decades, later ( with them not playing with each other for all that time ) on their first song, which they’re just making up as they go along, with no sheet music, no chord charts, not even an idea of what key the song will be in, or the drum beat that’s going to be used.
They just started playing, and it actually sounded great, not because of any “maestro” skills on the part of the musicians, but rather because they work well with each other, because they all have a similar idea of what the final product is going to sound like as it begins to unfold, and everything starts magically falling into place as each member adds his part.