A. Dance / C. Music · Music and Dance

Music: The Grand Staff, Key Signatures and Accidentals

C1.5 C1.1About 45 minutes

Learning goals

I can read notes on the grand staff, in both treble and bass clef, and find middle C between them.
I can name the order of sharps and flats and figure out the major key from a key signature.
I can find the relative minor key that shares a key signature with a major key.
I can read and perform accidentals (sharp, flat and natural) and know how long they last.

Words to know

grand staff
A treble staff and a bass staff joined by a brace, used for piano and other wide-range instruments.

key signature
The sharps or flats at the start of each line of music. They apply to every note with that letter name, in every octave.

accidental
A sharp, flat or natural sign written beside a single note, inside the music.

sharp (♯)
Raises a note by one half step.

flat (♭)
Lowers a note by one half step.

natural (♮)
Cancels a sharp or flat, so the plain note is played.

relative minor
The minor key that uses the same key signature as a major key. Its first note is 3 half steps below the major key's first note.

enharmonic
Two names for the same pitch, like F♯ and G♭.

Remember from earlier grades

In Grade 5 you read bass clef and found middle C on a ledger line. You know key signatures for C, G, D, F and B♭ major. In Grade 6 you read more ledger lines and counted half steps to name intervals.

This year you'll read the grand staff fluently, work out any key from its key signature, and handle accidentals like a pro.

The grand staff

Piano music needs a lot of notes, so it uses two staffs joined by a brace: the treble staff on top (usually the right hand) and the bass staff below (usually the left hand).

Middle C sits on a ledger line between the two staffs. It is the same note whether it is written just below the treble staff or just above the bass staff.

Treble lines (bottom to top): E G B D F. Spaces: F A C E.
Bass lines (bottom to top): G B D F A. Spaces: A C E G.

A piano keyboard seen from above with white keys and black keys in groups of two and three. — Piano music is written on the grand staff. The black keys, in groups of two and three, play the sharps and flats. AI-generated image

The grand staff. In the bass staff: C, E, G, B, then middle C on a ledger line. In the treble staff: middle C on a ledger line, then E, G, B, D. Both bold Cs are the same middle C.

The order of sharps and flats

Sharps and flats always appear in the same order in a key signature.

Sharps: F C G D A E B. Memory trick: Father Charles Goes Down And Ends Battle.
Flats: B E A D G C F (the sharps backwards). Memory trick: Battle Ends And Down Goes Charles' Father.

A key with 3 sharps always has F♯, C♯ and G♯. A key with 3 flats always has B♭, E♭ and A♭.

Naming the major key

Sharp keys: go up a half step from the last sharp. Last sharp G♯ → up a half step → A major.
Flat keys: the second-last flat names the key. Flats B♭, E♭, A♭ → second-last is E♭ → E♭ major. (One flat is a special case to memorize: F major.)
No sharps or flats: C major.

The relative minor

Every key signature belongs to a major key and a minor key. To find the relative minor, go down 3 half steps from the major key's first note (or count up to the 6th note of the major scale). C major → A minor. G major → E minor. F major → D minor.

How do you know which one a piece is in? Look at the last note and the chords: music usually ends on its home note.

Two key signatures in treble clef. Left: three sharps (F♯, C♯, G♯) for A major or F♯ minor. Right: three flats (B♭, E♭, A♭) for E♭ major or C minor.

Key signature	Major key	Relative minor
no sharps or flats	C major	A minor
1 sharp (F♯)	G major	E minor
2 sharps (F♯ C♯)	D major	B minor
3 sharps (F♯ C♯ G♯)	A major	F♯ minor
4 sharps (F♯ C♯ G♯ D♯)	E major	C♯ minor
1 flat (B♭)	F major	D minor
2 flats (B♭ E♭)	B♭ major	G minor
3 flats (B♭ E♭ A♭)	E♭ major	C minor
4 flats (B♭ E♭ A♭ D♭)	A♭ major	F minor

Common key signatures and their major and relative minor keys.

Accidentals

An accidental is a sharp, flat or natural written right before one note.

It lasts until the end of the bar, for that line or space.
A bar line cancels it: in the next bar, the note goes back to what the key signature says.
A natural cancels a sharp or flat earlier in the bar, or one from the key signature.

Enharmonic notes sound the same but have different names: F♯ and G♭ are the same piano key, and so are C♯ and D♭.

Bar 1: F sharp, then F (still sharp, because the sharp lasts to the end of the bar), then F natural, then F (still natural). Bar 2: the bar line resets it, so the F (a whole note, 4 beats) is a plain F again.

Worked example

Example: Let's name a key from its key signature

A piece has two flats in its key signature and ends on G. What key is it in?

Two flats in order: B♭, E♭.
Flat-key rule: the second-last flat names the major key. The second-last flat is B♭, so the major key is B♭ major.
Relative minor: go down 3 half steps from B♭: A, A♭, G. So the relative minor is G minor.
The piece ends on G, so it is probably in the minor key.

The piece is in G minor (the relative minor of B♭ major).

Worked example

Example: Let's read accidentals in a bar

In a piece in G major (one sharp: F♯), a bar has these notes: F, F with a natural sign, F, then G. Which F's are sharp? What about the first F in the next bar?

The key signature makes every F sharp, so the first F is F♯.
The second F has a natural sign, so it is F♮ (plain F).
The natural lasts until the end of the bar, so the third F is also F♮.
In the next bar, the bar line cancels the natural, and the key signature takes over again: F♯.

F♯, F♮, F♮, G. In the next bar, F is F♯ again.

Just for fun

Why couldn’t the pianist get into the house?

All their keys were inside the piano! 🎹 (A standard piano has 88 of them: 52 white and 36 black.)

Hands-on activity

Paper keyboard and grand staff

You need: paper, a pencil and a ruler. A real keyboard or a free keyboard app is helpful but not required.

Draw a grand staff: two sets of five lines with a gap between, and a brace on the left. Add a treble clef and a bass clef.
Write middle C in both places. Then write the notes C D E F G above middle C in the treble staff, and C B A G F below middle C in the bass staff.
Draw a key signature with four sharps. Name the major key and its relative minor. Do the same with four flats.
If you have a keyboard, play: F, F♯, then G♭. What do you notice about F♯ and G♭?
Sing or play a simple song you know from notation, such as a piece in a method book, watching for accidentals.

Your turn

Name the lines of the bass staff, bottom to top.

Where is middle C on the grand staff?

Write the order of sharps.

A key signature has 4 sharps. Name the major key.

A key signature has 4 flats. Name the major key.

What is the relative minor of D major?

A bar has: C♯, C, C. Which notes are sharp (no key signature)?

Name the enharmonic of D♭.

More practice: warm-up

Name the spaces of the treble staff, bottom to top.

What does a flat do?

What does a natural sign do?

Which hand usually plays the bass staff on the piano?

Write the order of flats.

More practice: on your own

Name the relative minor of E♭ major. Show how you found it.

A piece has 1 sharp and ends on E. What key is it probably in? Why?

In a piece in F major, a bar has B, B♮, B. Name each B.

Why is the grand staff useful for piano music?

A note in the bass staff sits in the space just above the top line. Name it.

Challenge

A key signature has 5 sharps. Name all five sharps, the major key and the relative minor.

Explain why F♯ and G♭ sound the same but are written differently.

A bar of 4/4 in D major has: F, F♮, F tied over the bar line to an F in the next bar. Name each F, including the tied one.

Check your understanding

Quiz

The lines of the treble staff, bottom to top, are ___.

Middle C on the grand staff is ___.

A key signature with 3 sharps is ___.

The relative minor of F major is ___.

An accidental lasts ___.

Which pair is enharmonic?

The order of flats is ___.

For parents and teachers

Big idea: Students demonstrate an understanding of standard musical notation through performance and composition (C1.5), including reading accidentals and the grand staff and recognizing the keys in music they perform, and they sing or play from notation (C1.1).

How to help at home:

A free keyboard app makes half steps and enharmonic notes easy to see and hear.
Quiz each other on the memory tricks: Father Charles Goes Down And Ends Battle.
Look at any sheet music in the house (piano books, hymn books, songbooks) and name the key together.

Common difficulties:

Reading bass clef as if it were treble clef (off by a skip). Always check the clef first.
Forgetting that accidentals last to the end of the bar. Circle accidentals in pencil.
Mixing up the sharp-key and flat-key rules. Sharp: up a half step from the last sharp. Flat: second-last flat.