A-Sharp
A-Sharp is a musical note that is one semitone higher than the note A. It is commonly used in various musical scales and compositions, providing a bright and vibrant sound. In Western music, A-Sharp is often represented by the symbol A♯ and is part of the chromatic scale.
In the context of music theory, A-Sharp can be enharmonically equivalent to the note B-flat (B♭), meaning they sound the same but are notated differently. This duality is important for musicians when reading sheet music and understanding key signatures in different musical pieces.