Sharps, Flats & Accidentals
Between most natural notes lie additional pitches called sharps and flats. This week you will learn how accidentals work, discover enharmonic equivalents, and locate every note on the keyboard.
Learning Goals
Lesson Content
Half Steps and Whole Steps
A half step is the smallest distance between two notes in Western music — it is the distance from one key to the very next key on the piano (including black keys). A whole step equals two half steps.
Sharps and Flats
A sharp (#) raises a note by one half step. A flat (b) lowers a note by one half step. These symbols are called accidentals.
- C# is one half step above C (the black key to C's right)
- Db is one half step below D (the same black key!)
- A natural sign cancels a sharp or flat and returns the note to its unaltered pitch
Enharmonic Equivalents
When two note names refer to the same pitch, they are called enharmonic equivalents. For example, F# and Gb are the same sound. The name you choose depends on the musical context (key signature, scale direction, etc.).
The Chromatic Scale
Playing every half step from one note to the same note an octave higher gives you the chromatic scale — all 12 unique pitches in Western music: C, C#/Db, D, D#/Eb, E, F, F#/Gb, G, G#/Ab, A, A#/Bb, B.
Practice Activities
Activity 1: Chromatic Keyboard Walk
Open the Synthesizer and play every key (white and black) from C up to the next C. Listen to how each half step sounds. Then walk back down.
Activity 2: Note Reading with Sharps & Flats
In the Note Reading game, try keys with sharps and flats. Start with G Major (1 sharp) and F Major (1 flat). Stay on Beginner difficulty.
- Notice how the key signature changes the notes you see
- Aim for 15+ correct answers in each key
Activity 3: Pitch Ear Training
Begin Pitch Identification on Beginner. The game uses only a few natural notes at this level — perfect for getting comfortable with ear training before adding sharps and flats.