Octaves · From Zero to Mozart

Octaves behave differently from thirds and sixths: instead of the low/high finger juggling, they're a fixed frame — 1st and 4th finger, one string apart, that moves up and down the neck as a single shape.

The frame

44 bpm

How to play it

Think of 1st and 4th finger as connected — the frame between them stays constant. Move the whole frame to check a different octave, rather than re-placing each finger independently.

1st finger on the G string (A), 4th finger on the D string (A) — a clean octave. Because it's the same finger interval regardless of key, the hand carries this shape as a unit rather than placing each finger separately.

Tuning octaves against each other, not against opens

The same wiggle-to-lock principle applies, but the target is different: an in-tune octave rings completely still, with no beating at all — arguably the easiest interval to hear when it's right, even though the frame itself takes practice to hold steady.

Try it

Try

Play the octave above, then shift the whole 1st/4th frame up a string pair (D and A strings) and find the matching octave there by keeping the same hand shape. The frame should feel identical — only its position on the neck changes.

The usual mistake

Placing the 4th finger independently of the 1st, checking each against an open string separately, and hoping they line up. Octaves are a frame, not two independent notes — treat the interval between the fingers as fixed, and place the whole shape at once.