F# at the Upright Bass Seat

Everything a chart can write over the letter F#, in 10 families. Four or five of them carry most of the repertoire; the rest are what a reharmonisation reaches for when four or five stop being enough.

The upright seat carries the walk — one note a beat, the change announced on beat one and the three notes after it deciding where the next change came from. Almost none of a chord is playable this low and almost none of it is wanted: whichever note is at the bottom is the chord as far as the room is concerned, so the question is which note, and on which beat.