Seven Labs,
One Engine

"Brighter" is not a hue question. The real one is how bright a field can get before the ember system breaks — and the answer is a computed ceiling: #F0A040 hits 2.14:1 on white, so it can never be the armed colour above field L 0.1135. Above that line armed burns instead of glowing. Three palettes are drawn to that number, and the shipping light scheme turns out to be inverted today — its armed beat is 28% quieter than an idle one.

The shipping screen is a tempo display that also makes noise. It reads BPM well at 1 m and tells you it is running — and it never tells you where you are. The beat dot is a fixed 100 ms flash, so at 120 BPM a glance lands on a row showing nothing 80% of the time. Make "played" an accumulated area instead of a transient and position reads at 100% duty. v2 leads with D1 and D2 — the RADIAL COCKPIT: Beacon's ring carrying Cockpit's readouts in one bezel, plus the thing neither parent had — which note is sounding. Panels 0/A/B/C stay as the comparison baseline, not as candidates.

Today the pill track asks opacity to answer "where am I", with 1.33:1 of headroom to say it — while a spent verse can render 2.04× brighter than the bar you are playing. Split the question by viewing distance instead: a NOW plate that names the section and counts bars-of-section, an approach gutter that warns two bars out, and a form ribbon that fits the whole tune to width and never scrolls. The owner approved the evolved variant, so v2 leads with it and demotes the shipped pill track to a live reference strip — and it found a real bug doing so: the ASH spent-token measures 1.41:1 on Midnight, under the 1.53 visibility floor, so ASH became per-palette.

This one makes sound. Put headphones on. The metronome now plays the rudiment: distinct voices for accent / tap / ghost at a sourced 1 : 0.44 : 0.22, sticking as stereo pan (right hand → right ear) with pitch leading and pan following, and flams and drags scheduled genuinely early against a Web-Audio lookahead scheduler — the house pattern; the v1 chained setTimeout is deleted. Four rungs: WATCH → LISTEN → ECHO → ALONG, where ECHO plays you a bar and scores the bar you answer with. The v1 idea still carries the picture: the tick lane grows a rail, right hand above it, left below, colour-blind safe by construction.

Six non-amber families on the field he picked — seven identical PERFORMANCE screens generated from one template string, so the only difference between any two phones on the page is the accent triple. Two findings do most of the work. The bright field kills the glow: five of seven halos composite to 1.79–2.36:1, i.e. decoration by measurement — so Studio forces the exact discipline that separates designed from generated. And the matrix has holes: Oxblood, Indigo and Signal Red cannot legally glow on a dark field at all, so picking one is a decision about the theme menu, not about a hex.

"The classic clean beat-dot metronome stays THE DEFAULT FACE forever; everything else is an alternate FACE of the same engine." The owner's principle, made law — the watch-face model. So this lab is not three mockups side by side; that would prove the opposite. It is one stage, one clock, one truth and a switcher: change the face mid-bar and the bar keeps going, with counters underneath so you can check that rather than take our word for it — including a BAD FACE control that deliberately breaks the clock, so you can see the needle move before you trust the zero. D1 arrives here as a complete, operable face: the same 318 pt ring and 240 pt pip ring, plus the three things a display is not — a transport, a Song Map that coexists, and the session pill. And the reason all of this exists is one measured number: CLASSIC's Bebas 72 numeral is 27.0′ at 1 m and 13.5′ at 2 m, under R1's 14′ floor. It is not wrong; it is a 1 m instrument. STAGE clears 24.7′ at 2 m — the same metronome answering a different room.

Today the plate cannot say which chord: the ii–V–I preset reads BRIDGE 1/1 → PRE-CHORUS 1/1 → CHORUS 1/1 and the circle drill collapses to one VERSE block. This lab puts the chord in the name slot at Bebas 46, the coming chord in the approach gutter warming through the last bar, the key centre small and steady in the caption, and twelve key pills in the ribbon — same 106 pt, same three bands, different content. Every symbol is generated from a spelled key and a scale degree (G♭ by 4ths, F♯ by 5ths is a table row), all 12 keys both ways are printed as the proof, and a guest phone reads the same bar in a horn’s written key. No chord audio in v1. Two measured findings for the port: neither bundled face has ♭/♯, and Bebas has one glyph for i and I (and for m and M) — so numerals must be Overpass Mono, and minor prints as −7, not m7.

Remote sessions ship in 1.0, and they need one thing this app has never drawn: the four-letter code that gets a bandmate in another city into your room. Every other surface in the arc already exists — this is the only new plate, so it is the only thing here asking for your taste. Three sizes (Bebas 96 / 120 / 144), SHARE beside the code or beneath it, and one variant in Overpass Mono, because a room code is arguably data rather than a title. The law it already obeys: the code is --amber, never LIT — #F0A040 is the once-per-bar downbeat colour and a code sits idle for a whole rehearsal. Also on the page, not for ruling: what Josh sees, including the RTT 84 · DRIFT 1.3 MS · 0 REALIGNS line that lets a session across the ocean be judged in numbers. And a letter audit — I/O/S are already cut so nobody types 1/0/5, but Bebas is condensed, so tell me if M/N or U/V read alike to you at a glance and I will cut them; even 19 letters leaves 130,321 codes.

Your idea from 09-23: one tap strips the Metronome screen down to just the beat dots, as big as the screen allows, evenly spaced, with the BPM as a shadow behind them — and it rotates. Open it on your phone and turn the phone sideways: the dots re-flow to fill whichever way it's held, and meters keep their groups (7/8 stays 2+2+3, 12/8 stays four threes). The page prints the measured dot size against today's largest dot (64 pt). Nothing here is new styling — the colours, the lit / played / idle states, the 7.5 % ghost BPM and the click itself are the app's own. The one law it keeps: #F0A040 lights once per bar, on the downbeat. Tap the dots for meter, tempo, subdivision ring, ghost strength, palette and SOUND.