Alto clef and tenor clef explained for kids

The alto clef and the tenor clef are two clefs that mark where middle C sits on the staff. They look the same: two curves that meet at a point. The line at that point is middle C. In the alto clef, it is the middle line. In the tenor clef, it is the fourth line from the bottom. Viola players read the alto clef every day.

The C clef

A clef is the sign at the start of each staff. It tells the reader which note is on which line.

Clef	Also called	It marks
Treble clef	G clef	The G above middle C
Bass clef	F clef	The F below middle C
Alto clef and tenor clef	C clef	Middle C

The C clef can sit on different lines. Its name changes with its place. Today two places are in use: alto and tenor.

Read treble clef and bass clef note names explained.

The alto clef

Middle C is on the middle line.

Lines, from the bottom	F, A, C, E, G
Spaces, from the bottom	G, B, D, F

A way to remember the lines: they spell “face” with a G on the end. The spaces match the first four words of “Good Boys Do Fine.”

Who reads it: the viola. It is the viola’s main clef. The alto trombone reads it too.

The tenor clef

Middle C is on the fourth line from the bottom.

Lines, from the bottom	D, F, A, C, E
Spaces, from the bottom	E, G, B, D

A note on a line in the alto clef sits on the next line up in the tenor clef. A note in a space sits in the next space up.

Who reads it: the cello, the bassoon, and the trombone, for their high notes. These players read the bass clef most of the time and switch to the tenor clef when the music climbs.

Why these clefs exist

Each clef fits a range of notes onto five lines.

The viola plays in the middle. Its lowest note is the C below middle C. In the treble clef, its low notes would hang on many ledger lines below the staff. In the bass clef, its high notes would sit on many ledger lines above. The alto clef puts the middle of the viola’s range in the middle of the staff.

The tenor clef does the same for the high notes of the cello, the bassoon, and the trombone.

Read ledger lines explained.

The same note in four clefs

Clef	Where middle C sits
Treble	One ledger line below the staff
Alto	The middle line
Tenor	The fourth line from the bottom
Bass	One ledger line above the staff

How violists learn it

• Start from middle C. Find the middle line, and count up or down by step.
• Use the open strings. The viola’s four strings are C, G, D, and A. Learn where each one sits on the staff, and the rest falls between them.
• Read by distance. A step is from a line to the next space. A skip is from a line to the next line.
• Expect the treble clef later. When viola music goes high, it switches to the treble clef.

A child who moves from the violin to the viola has to learn this clef. It takes steady daily reading. Read violin vs viola and the viola for kids.

Old clefs

Singers once had a clef for each voice: soprano, alto, tenor, and bass. Each put middle C on a different line. That is where the names “alto clef” and “tenor clef” come from. Choirs now read the treble clef and the bass clef, and the names stayed with the instruments.

Common mistakes

• Reading alto clef as treble clef. Say the clef’s name before reading each line of music.
• Counting from the wrong line. Point to the middle line, and say “C.”
• Mixing up alto and tenor. Check which line the point of the clef sits on.

Things to do together

Draw the clef. On big staff paper, draw a thick line down, a thin line down, and two curves that meet at the middle line.

Middle C four ways. Draw middle C in the treble, alto, tenor, and bass clefs. Play it on a piano each time. It is the same key.

Name the lines. Point to a line in the alto clef. Your child names it.

Spell a word. Write “face,” “bead,” and “cage” as notes in the alto clef.

Move the clef. Draw five notes on a staff with no clef. Name them in the alto clef, and then in the tenor clef.

Find it in a score. Look at the score of a string quartet. Find the line for the viola, and spot its clef.

Print and play

Print staff paper, which has no clefs on it. For more reading practice, read note reading games for kids.