B♭ Major is a musical key that consists of the notes B♭, C, D, E♭, F, G, and A. It is characterized by its warm and rich sound, often used in various genres, including classical, jazz, and pop music. The key signature of B♭ Major has two flats, which are B♭ and E♭. In terms of scale degrees, the first note, B♭, is the tonic, while E♭ serves as the subdominant and F as the dominant. Many famous compositions, including works by Ludwig van Beethoven and Johann Sebastian Bach, utilize B♭ Major, showcasing its versatility and emotional depth.