This is a comprehensive, single-file interactive application designed for harmonica embouchure education. It uses a modern SaaS aesthetic, responsive SVG visuals, and clean state management. ```html Free Harmonica Tongue Blocking Visualization and Embouchure Guide

Tongue Blocking Visualization

1. The Setup

To master tongue blocking, start by creating a large aperture with your lips. Instead of puckering, relax your lips as if saying the letter 'O' and place them over three holes at once.

Step 1 of 3

Why Tongue Blocking?

Tongue blocking allows for a fuller, warmer tone, access to note splits, and is the foundation for advanced techniques like octaves and rhythmic slaps.

Rich, throaty resonance
Enables split-interval chords
Improved articulation control

Practice Tip

Don't force the air. Tongue blocking should feel effortless. If you experience jaw tension, relax your shoulders and re-align your jaw position.