All Bar Chord Music Theory Infographic with I–IV–V Circle

Music theory infographic titled "I–IV–V Chord Progression". Archetype: CIRCLE OF FIFTHS adapted as a common chord progression education poster, with a precise 12-position ring showing major keys around the circle and related minor labels in smaller type, and a central analytical panel explaining the I–IV–V relationship in general theory. Editorial music education poster in retro 1970s vinyl style, minimal monochrome palette, clean high-contrast black, cream, and muted gray, subtle print texture, geometric layout, bold vintage typography, no copyrighted lyrics or sheet music. Musically accurate theory visualization: clearly highlight tonic, subdominant, and dominant functions; show example triads in multiple common keys such as C–F–G, G–C–D, D–G–A, A–D–E, with correct Roman numerals I, IV, V and correct note spellings. Include compact interval callouts showing root movement by perfect 4th and perfect 5th, and a simple harmonic function legend. Because the search intent is "all bar chord", add a small secondary educational panel with generic movable bar chord concept diagrams on a neutral fretboard, showing E-shape and A-shape bar chord forms with finger position dots and barre indication, but no song-specific material; keep these diagrams musically plausible, simplified, and clearly subordinate to the main theory graphic. Use precise chord symbols and note names in canonical form. No on-image text for the search intent phrase itself. All text MUST be written in English (array). Every heading, label, caption, legend and metric name in the image must be in English — not English. Spell each English word correctly using English characters and diacritics. Numbers stay as digits, no watermarks Musically accurate notation, finger positions and intervals. Note names and Italian musical terms stay in canonical international form. No copyrighted song lyrics or sheet music.