34.18Level 5 — half-diminished chord as directional device

In minor keys, m7♭5 often tells you:

a minor destination may be approaching.

Example:

Am7♭5 → D7 → Gm

A C E♭ G

→ D F♯ A C

→ G B♭ D.

This is:

iiø–V–i in G minor.