Frets

Yes, he shaved all the frets off of his bass guitar, but it doesn't make him Jaco Pastorius.

Life's but a walking shadow, a poor player that struts and frets his hour upon the stage, and then is heard no more. It is a tale told by an idiot, full of sound and fury, signifying nothing.

Tom asked me to help him put new frets on his guitar.

Mary asked me to help her put new frets on her guitar.

Tom and Mary asked me to help them put new frets on their guitars.

Tom asked me to help Mary put new frets on her guitar.

Not all string instruments have frets.

How many frets does your guitar have?