Find the recurring group of three
Listen for a pattern of one two three that returns consistently through the phrase. Tap all three beats while giving the first a little more weight. Do not label a piece a waltz simply because you hear three quick notes; the larger grouping and musical style matter. For this exercise, use a clear three-beat passage and count several measures before playing. The first beat should feel like a regular point of arrival, not an isolated accent followed by two hurried strokes.
Build a light accompaniment
Hold one chord and play a clear brush on beat one with gentler brushes on beats two and three. Alternatively, use one selected note followed by two small chord attacks. On a high-G ukulele, remember that a physically lower string does not necessarily supply a low bass pitch. Choose the sound by listening. Keep the three beats evenly spaced and the hand relaxed. The lighter attacks need rhythmical certainty even when their volume is reduced, so avoid making them hesitant or nearly late in an attempt to be delicate.
Shape the phrase beyond one measure
Apply the pattern to a short progression and count how many measures each chord lasts. Let a four-measure phrase grow and relax instead of accenting every first beat with identical force. Check the harmony against your AudioChords chart and verify the change timing by ear. Add the melody and notice whether the third beat pulls you early into the next measure. Record a short pass and count along while listening. A useful waltz accompaniment carries both the steady three-beat cycle and the longer phrase, leaving the singer room to move across the bar line without losing the shared pulse.