From 1e19cd4626b4f4bfa4f17e557e0cc847d31eea30 Mon Sep 17 00:00:00 2001
From: Me Here <me@here>
Date: Mon, 25 May 2026 13:47:50 -0500
Subject: [PATCH] Add a continuous ~4:00 demo song set list
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New "🎵 Song" seed list (SEED_VERSION 3): 8 bar-length segments that
auto-advance through tempo ramps (92→120 build, 132→83 outro), a 2/4
samba, a half-time shuffle, a 909 four-on-the-floor and a 16th peak —
totalling ~4:00. Also gate bar-count auto-advance on the Continue toggle
(matches its "countdown / bars" label; only bar-length items are
affected, which previously didn't exist outside this song).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
---
 index.html | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/index.html b/index.html
index b2dac24..d002e20 100644
--- a/index.html
+++ b/index.html
@@ -555,7 +555,7 @@ function advanceMaster(ahead) {
         }
       }
       segBarCount = barIndex;                    // whole bars elapsed in this segment
-      if (segBars > 0 && barIndex >= segBars && !pendingSwitch && state.running) {  // bar-count auto-advance
+      if (segBars > 0 && barIndex >= segBars && !pendingSwitch && state.running && continueMode) {  // bar-count auto-advance (Continue)
         const nx = nextLoadedTarget();
         if (nx) { pendingSwitch = { sl: nx.sl, item: nx.item, atTime: masterBeatTime, reason: "auto" }; break; }  // cut at this downbeat
       }
@@ -1258,6 +1258,18 @@ const SEED_SETLISTS = [
     ["Tempo builder 80↑", "t80;woodblock:4;rmp80/4/4"],
     ["Gap trainer (play 2 / rest 2)", "t100;kick:4;hatClosed:4/2;tr2/2"],
   ] },
+  // A continuous ~4:00 song: each item has a bar length (b<n>) so it auto-advances (with
+  // Continue on) through tempo ramps and shifting styles. Durations ≈ bars × beats × 60/bpm.
+  { title: "🎵 Song — continuous (~4:00)", description: "A full song: turn on Continue, press ▶ on “Intro”, and it plays straight through (~4 min) — segments auto-advance on their bar counts, through tempo ramps and shifting styles.", items: [
+    ["Intro — hats & kick",       "t88;b8;kick:4=X.x.;hatClosed:4/2=gggggggg"],
+    ["Groove in — backbeat",      "t88;b16;kick:4=X.x.;snare:4=.X.X;hatClosed:4/2"],
+    ["Half-time shuffle",         "t92;b12;kick:4/3=X....x...x..;snare:4/3=..gg.gX.gg.g;hatClosed:4/3=X.xX.xX.xX.x"],
+    ["Build — ramp 92→120",       "t92;b16;rmp92/4/2;kick:4;snare:4=.X.X;hatClosed:4/2"],
+    ["Four-on-the-floor (909)",   "t124;b18;kick909:4;clap909:4=.X.X;hat909:4/2=.X.X.X.X"],
+    ["Samba break (2/4)",         "t116;b24;tomLow:2/4=x...X...;hatClosed:2/4;woodblock:2/4=X.xx.xX."],
+    ["Peak — 16ths",              "t132;b16;kick:4=X..x;snare:4=.X.X;hatClosed:4/4"],
+    ["Outro — ramp down",         "t132;b8;rmp132/-7/1;kick:4=X..x;hatClosed:4/2=gggggggg"],
+  ] },
 ];
 
 /* =========================================================================
@@ -1487,7 +1499,7 @@ window.addEventListener("keydown", (e) => {
 // Seed the demo set lists. Versioned + additive: a newer SEED_VERSION adds any
 // seed list whose title isn't already present, without clobbering the user's lists
 // (and won't re-add one they've deleted at the same version).
-const SEED_VERSION = 2;
+const SEED_VERSION = 3;
 if ((lsGet(LS.seeded, 0) | 0) < SEED_VERSION) {
   for (const s of SEED_SETLISTS) {
     if (!setlists.some((x) => x.title === s.title)) {