Soprano clef
The soprano clef (in German also “Diskantschlüssel”) is a C clef on the lowest line: middle C (C4) lies on the first line, with the higher notes above it. Today it is met mainly in older editions.
- Fixed
- C4 on the first (lowest) line
- In German also
- Diskantschlüssel
- Family
- C clef
- Today
- mainly in historical editions
Middle C right at the bottom
A C clef fixes on which line middle C (C4) sits. The soprano clef puts it on the lowest line. As a result the whole staff lies above C4: the five lines carry the notes C4, E4, G4, B4 and D5. This suits voices that lie high, such as a soprano voice in old choral scores. Hence the name and the German word “Diskantschlüssel”, after the Diskant, the top voice.
A melody in the soprano clef
The first C4 lies on the lowest line, the last C5 in the fourth space. The notes sound as everywhere else: C4 is middle C.
The same notes in the treble clef
In the treble clef the C4 lies below the staff on the first ledger line. The soprano clef saves these ledger lines for voices that sing mainly above C4.
How to read it
Find the C4 on the lowest line and count upward from there, line by line: lines and spaces alternate, and each place is one note further in the C major scale. The table summarises all places. If you know the treble clef, convert: the same place in the staff means in the soprano clef a note a third lower (lowest line: C4 instead of E4). In the treble clef the C4 sits on the first ledger line below the staff.
| Place in the staff (from the bottom) | Note in the soprano clef |
|---|---|
| first line | C4 |
| first space | D4 |
| second line | E4 |
| second space | F4 |
| third line | G4 |
| third space | A4 |
| fourth line | B4 |
| fourth space | C5 |
| fifth line | D5 |
Where you find it
Today the soprano clef is rare. It appears mainly in editions of the 17th and 18th centuries and in new editions that deliberately preserve the old clefs. Otherwise the other C clefs are met more often, such as the alto clef of the viola or the tenor clef. For modern playing it is enough to be able to read it.
Common mistakes
- Taking the clef for a G clef: The sign shows the C4 here, not the G4.
- Reading the lines as in the treble clef: Then all notes lie a third too high.
- Looking for the C4 on the wrong line: It lies on the lowest line.
Continue on Maikstrings
Related terms
C clefAlto clefTenor clefBaritone clefClefTreble clefOne-line octave
Editor: Maik Krohm · reviewed on 3 October 2026
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