A country waltz counts in three, not four, and every part below is six eighth-note slots long instead of eight — the meter itself is the first derived fact, not a stylistic choice. The classic waltz-bass shape is "bass, chord, chord": a single low note announces the bar, and the chord answers twice behind it, the "oom-pah-pah" that gives the feel its name.
| Chair | 1 | & | 2 | & | 3 | & |
|---|---|---|---|---|---|---|
| Bass | 1 | — rest | — rest | — rest | — rest | — rest |
| Guitar | — rest | — rest | D | — rest | D | — rest |
| Mandolin | — rest | — rest | chop | — rest | chop | — rest |
| Banjo | roll | roll | roll | roll | roll | roll |
| Fiddle | sustain | — rest | — rest | — rest | — rest | — rest |
| Dobro | — rest | — rest | — rest | — rest | — rest | run |
| Lap Steel | sustain | — rest | — rest | — rest | — rest | — rest |
| Pedal Steel | sustain | — rest | — rest | — rest | — rest | — rest |
| Piano | sustain | — rest | — rest | — rest | — rest | — rest |
The bass carries only one degree-1 note per bar here, never a 5 — the waltz frame does not ask the bass to outline the chord the way boom-chick or the train beat do, because the guitar's two chord hits on beats two and three already state the harmony in full. Realized over the tonic-subdominant-dominant frame in G, the bass plays G on the tonic bar, C on the subdominant bar, and D on the dominant bar: one note each, all three of them open strings on a standard four-string bass.
The mandolin doubles the guitar's rhythm exactly — both chairs land on beats two and three — but not its texture: the guitar rings a full chord while the mandolin's chop stays closed and damped, so the "pah-pah" has a soft attack underneath a percussive one, two different articulations of the same two beats rather than one instrument repeating the other. The fiddle's single sustained pad spans the whole bar, the same treatment it gets in boom-chick — the lap steel and the pedal steel hold their chords under the same bar, one bowed and two barred — and the dobro's fill is pushed all the way to the last eighth of the bar — the sixth slot — so it functions as a pickup into the next bar's downbeat rather than a comment on the bar it is written in, exactly the role a turnaround fill plays at the end of a song section (see song forms).
The banjo rolls straight through the bar, six picked notes to it, one on every slot. In three-four that matters more than it does in a two-feel: the "oom-pah-pah" is three separate hits with air between them, and a slow waltz can sag in that air. The roll keeps the bar moving underneath the hits without adding one of its own — the thumb, index and middle pick single strings through the chord, so the banjo is felt as motion rather than heard as a fourth chord stroke — and it is also why a waltz with a banjo in it rarely needs the guitar to strum any harder than the two soft answers it already plays.