Is it tuned a bit sharp? (4)

I believe the answer is:

harp

I'm a little stuck... Click here to teach me more about this clue!

'is it tuned a bit' is the definition.
I can't tell whether this definition defines the answer.

'sharp?' is the wordplay.
'HARP' is hidden within the letters.
However, I'm unsure how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for harp that I've seen before include "Keep on about" , "Instrument for angel" , "Talk tiresomely using upright musical instrument" , "Traditional Gaelic musical instrument" , "Stick to one theme" .)

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.