B♭ (musical note) in the context of "B-flat minor"

E♭ (E-flat) or mi bémol is the fourth semitone of the solfège.

It lies a diatonic semitone above D and a chromatic semitone below E, thus being enharmonic to D♯ (D-sharp) or re dièse. In equal temperament it is also enharmonic with F (F-double flat). However, in some temperaments, D♯ is not the same as E♭. E♭ is a perfect fourth above B♭, whereas D♯ is a major third above B.

The vuvuzela /vuːvuːˈzɛlə/ is a horn with an inexpensive injection-moulded plastic shell about 65 centimetres (2 ft) long, which produces a loud monotone note typically around B♭ 3 (the first B♭ below middle C). Some models are made in two parts to facilitate storage, and this design also allows pitch variation. Many types of vuvuzela, made by several manufacturers, may produce various intensity and frequency outputs. The intensity of these outputs depends on the blowing technique and pressure exerted. The indoor noise level caused the U.S. NCAA to permanently ban them after the 7 February 1987 Division I Men's Ice Hockey game between the Brown Bears and the Rensselaer Polytechnic Institute Engineers. The noise was so extreme that Brown formally complained and "The RPI Rule" was universally adopted.

The vuvuzela is commonly used at football matches in South Africa, and it has become a symbol of South African football as the stadiums are filled with its sound. The intensity of the sound caught the attention of the global football community during the 2009 FIFA Confederations Cup in anticipation of South Africa hosting the 2010 FIFA World Cup.

D minor is a minor scale based on D, consisting of the pitches D, E, F, G, A, B♭, and C. Its key signature has one flat. Its relative major is F major and its parallel major is D major.

The D natural minor scale is:

E-flat major is a major scale based on E♭, consisting of the pitches E♭, F, G, A♭, B♭, C, and D. Its key signature has three flats. Its relative minor is C minor, and its parallel minor is E♭ minor, (or enharmonically D♯ minor).

The E♭ major scale is:

The alto saxophone is a member of the saxophone family of woodwind instruments. Saxophones were invented by Belgian instrument designer Adolphe Sax in the 1840s and patented in 1846. The alto saxophone is pitched in the key of E♭, smaller than the B♭ tenor but larger than the B♭ soprano. It is the most common saxophone and is used in popular music, concert bands, chamber music, solo repertoire, military bands, marching bands, pep bands, carnatic music, and jazz (such as big bands, jazz combos, swing music).

The alto saxophone had a prominent role in the development of jazz. Influential jazz musicians who made significant contributions include Don Redman, Jimmy Dorsey, Johnny Hodges, Benny Carter, Charlie Parker, Sonny Stitt, Lee Konitz, Jackie McLean, Phil Woods, Art Pepper, Paul Desmond, and Cannonball Adderley.

The tenor saxophone is a medium-sized member of the saxophone family, a group of instruments invented by Adolphe Sax in the 1840s. The tenor and the alto are the two most commonly used saxophones. The tenor is pitched in the key of B♭ (while the alto is pitched in the key of E♭), and is a transposing instrument in the treble clef, sounding an octave and a major second lower than the written pitch. Modern tenor saxophones which have a high F♯ key have a range from A♭₂ to E₅ (concert) and are therefore pitched one octave below the soprano saxophone. People who play the tenor saxophone are known as "tenor saxophonists", "tenor sax players", or "saxophonists".

The tenor saxophone uses a larger mouthpiece, reed and ligature than the alto and soprano saxophones. Visually, it is easily distinguished by the curve in its neck, or its crook, near the mouthpiece. The alto saxophone lacks this and its neck goes straight to the mouthpiece. The tenor saxophone is most recognized for its ability to blend well with the soprano, alto, and baritone saxophones, with its "husky" yet "bright" tone.

C minor is a minor scale based on C, consisting of the pitches C, D, E♭, F, G, A♭, and B♭. Its key signature consists of three flats. Its relative major is E♭ major and its parallel major is C major.

The C natural minor scale is:

F major is a major scale based on F, with the pitches F, G, A, B♭, C, D, and E. Its key signature has one flat. Its relative minor is D minor and its parallel minor is F minor.