Basic Rhythm Reader (4/4)

🎯 Goal

Read and tap rhythms in 4/4 with accurate timing as notes scroll across the staff.

🧭 Interface

• Level: choose difficulty (L1–L8).
• Length: 30–120s session duration.
• BPM: tempo control.
• Start / End: begin or stop a session.
• Calibrate: quick device-latency sync.
• Counters: beat (1–4) and subdivision flashes.

⚙️ Calibration

1. Tap Calibrate.
2. Hear an 8-beat "count-in" pattern (1 - 3 - 1 2 3 4).
3. Then tap with the next 8 clicks.
4. Offset is saved automatically; repeat anytime.

🥁 Playing

• iPhone/iPad: tap the blue button or the white stage where you see the staff..
• Desktop: press Spacebar (or click those same tap zones).
• Warm-up: two bars of rests before the first notes.

📊 Scoring

• Perfect ≤ 90 ms, On-Beat ≤ 180 ms.
• “Pocket” / “Rush” / “Drag” timing feel.
• Personal bests saved by level & BPM.

🧩 Levels (4/4, no ties/dots)

L1 W+H•no rests · L2 H+Q•no rests · L3 H+Q+rests · L4 Q+E•no rests · L5 H+Q+E+rests · L6 Q/E/16th•no rests · L7 Q/E/16th+rests · L8 2/1/½/¼+rests.