80.38Level 19 — bass ambiguity

Now reverse the perspective.

Hold RH:

C-E-G.

Delay bass.

Without bass:

C major triad.

Now bass enters:

A.

Suddenly:

Am7.

Bass F:

Fmaj9-ish.

Bass D:

D11-ish suspended environment.

Same upper chord.

The bass retroactively changes what you heard.