How many sharps are in the key of E major?

The key of E major contains four sharps. This is determined by the sequence of sharps that appear in the key signature, which follows a specific pattern: F#, C#, G#, and D#. These notes are raised a half step, which contributes to the characteristic sound of the E major scale. The scale is built on the root note E and follows the whole and half step pattern that defines major scales: whole, whole, half, whole, whole, whole, half.

When counting the number of sharps, starting with E and adding the necessary sharps (F#, C#, G#, and D#) to complete the scale gives a total of four. Understanding this is crucial for identifying key signatures and recognizing the structure of various scales in music theory.