All Bar Chord Piano Infographic: I–IV–V in C Major

Music theory infographic titled "I–IV–V Chord Progression on Piano". Archetype: KEYBOARD INTERVAL DIAGRAM adapted as a rhythm and time-signature teaching chart. Vintage music print style, sage and rose palette, editorial music education poster. Show a precise full piano keyboard section centered on the key of C, with clearly highlighted triads for I = C major, IV = F major, V = G major using accurate note grouping: C–E–G, F–A–C, G–B–D. Include clean keyboard overlays for finger positions on both hands, visually separated by color, and interval markers showing root, major 3rd, perfect 5th within each chord. Add a compact rhythm panel with accurate 4/4 time signature visualization, measure boxes, beat-count arrows, and block-chord placement across one bar each for I, IV, and V, using pedagogical timing graphics rather than copyrighted sheet music. Include small supporting captions explaining tonic, subdominant, dominant, and chord function in simple English. No lyrics, no branded notation, no copyrighted song references. Decorative vintage engraving textures, soft paper grain, elegant borders, muted sage green and dusty rose accents, musically accurate spacing and keyboard proportions. 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.