82.25 Level 10 — C→E♭ major
9932 / 18210 · Workshop 82 — Symmetrical Harmony and Harmonic Geometry: Diminished Cycles, Augmented Triads, Whole-Tone Motion, Major-Third Systems, and Escaping Ordinary Tonal Gravity← prev⊞ allnext → 82.25Level 10 — C→E♭ major
C:
C-E-G.
E♭:
E♭-G-B♭.
Common:
G.
E→E♭.
C→B♭ perhaps.
This sounds:
warm
borrowed
cinematic
depending context.