The treble clef – or G clef – is the most commonly used clef and is associated with the guitar. The curl of the clef passes through the second line of the staff, indicating that it’s a G. Bassists read the bass clef, also known as the F clef, which has the F line of the staff pass through its two dots. Instruments that play in a higher register play from the treble clef, whereas instruments with a lower range play from the bass clef.