Bridge-Drag Tetrachord Builder
Slide movable bridges on a multi-string lyre, lock diatonic, chromatic, or enharmonic genus from seeded just-ratio recipes, and read cents on every string gap before you commit the tuning.
Drag movable bridges, lock diatonic–chromatic–enharmonic genera, and hear authentic tetrachord colors on a virtual lyre—built for classics students, early-music players, and mythology-minded songwriters who need real interval ethos, not a myth wiki or a modern DAW.
Illustrative marketing figures; not App Store metrics.
Core loop
Lab benches
Slide movable bridges on a multi-string lyre, lock diatonic, chromatic, or enharmonic genus from seeded just-ratio recipes, and read cents on every string gap before you commit the tuning.
Stack conjunct or disjunct tetrachords into Dorian, Phrygian, Lydian, Mixolydian and hypo variants on Greater/Lesser Perfect System maps, anchored at mese and proslambanomenos.
Hear any string, tetrachord, or full mode through AVAudioEngine pluck synthesis with tension and brightness controls plus a steady practice pulse—fully offline, no mic required.
Identify genus, mode name, or interval quality from short seeded phrases; session scores unlock harder banks so performers and students train recognition, not just theory recall.
Open Homeric, tragic-chorus, and Delphic sketches pre-tagged with genus and mode; one tap retunes the lyre and highlights the working tetrachords for stand practice.
Export string order, ratios, cents offsets, and bridge summaries as PDF or high-res image; a home-screen harmonia-of-the-day card deep-links straight into the matching lab setup.
About the studio
LyreGenus Mode Lab turns Greek harmoniai from static ratio tables into a hands-on tuning studio. Place bridges on a 7- or 8-string lyre, validate just-ratio recipes against seeded canonical gaps with live cents readouts, then pluck single strings, tetrachords, or full modes through on-device synthesis.
Map conjunct and disjunct tetrachords onto the Greater and Lesser Perfect Systems with mese and proslambanomenos anchors, run genus and mode recognition drills, and open repertoire cue cards that retune the instrument for Homeric hymns or tragic choruses. Side-by-side ladders expose where ancient steps diverge from major, minor, and church modes.
Export stand-ready recipe sheets, finish guided lessons on Pythagorean ratios and systema teleion, and restore tagged custom tunings offline—so you practice ethos with confidence anywhere, without a microphone or a network.