What is a sharp note?

A sharp note refers to a note that has been raised by a half step from its natural pitch. This means that if you take a standard note, such as C, when you apply a sharp to it, the note becomes C sharp (C♯). This alteration affects how the note sounds both in terms of its frequency and its placement within a musical scale. In Western music, sharp notes are commonly used to create a variety of scales and chords, contributing to the overall tonality and tension in compositions.

The concept of sharp notes is fundamental to understanding music theory because it is essential for playing in different keys and modulating between them. Recognizing sharp notes also aids performers in accurately interpreting written music situations where sharps are indicated, such as in key signatures or accidentals.