Six of these are redundant, though, because they result in an identical assignment of the notes to the lines and spaces. For example, a G-clef on the third line yields the same note placement as a ...

There are some well known and well-trodden examples! Working from bottom to top, the note names for the lines on the treble ...

Today, the treble clef appears printed on composers’ notepaper or preloaded on computers. It indicates notes’ pitch, because it’s placed on the second line of the musical staff, showing a G.