The bass clef is used for bass instruments such as the cello, tuba and double bass. This is because it helps musicians to read low notes without having to count lots of ledger lines. It is also known as the F clef as just like the treble clef, when you draw one you start near the F line. It is also known as the F clef because it's an old fashioned way to write an F.

The bass clef is sounded two octaves lower (16 notes)

This example looks like "Twinkle Twinkle Little Star" in the treble clef however, because you can see the bass clef symbol at the start of the bar the notes will sound different. Listen to the example and have a think about they are different.

These notes are different because the bass clef is sounded 12 notes lower than the treble clef. This would mean, what in the treble clef would look like a G, is now a B. You can see from the first note of the example below. Likewise, the third note along would be a D in the treble clef however now as we are 12 notes lower it sounds as an F.

Can you fill in the gaps for the last three notes below?