Definition. For example, in any twelve-tone equal temperament (the predominant system of musical tuning in Western music), the notes C ♯ and D ♭ are enharmonic (or enharmonically equivalent) notes.Namely, they are the same key on a keyboard, and thus they are identical in pitch, although they have different names and different roles in harmony and chord progressions.

A keyboard instrument is a musical instrument played using a keyboard, a row of levers which are pressed by the fingers.The most common of these are the piano, organ, and various electronic keyboards, including synthesizers and digital pianos.Other keyboard instruments include celestas, which are struck idiophones operated by a keyboard, and carillons, which …

The major scale or Ionian mode is one of the diatonic scales. It is made up of seven distinct notes, plus an eighth that duplicates the first an octave higher. The pattern of seven intervals separating the eight notes is T–T–S–T–T–T–S. In solfège, the syllables used to name each degree of the scale are Do–Re–Mi–Fa–Sol–La–Ti–Do.

The Well-Tempered Clavier, BWV 846–893, consists of two sets of preludes and fugues in all 24 major and minor keys for keyboard by Johann Sebastian Bach.In the composer's time, clavier, meaning keyboard, referred to a variety of instruments, most typically the harpsichord or clavichord, but not excluding the organ. The modern German spelling for the collection is Das …

Formal theory. Formally, a string is a finite, ordered sequence of characters such as letters, digits or spaces. The empty string is the special case where the sequence has length zero, so there are no symbols in the string.

A harpsichord (Italian: clavicembalo; French: clavecin; German: Cembalo; Spanish: clavecín; Portuguese: cravo; Dutch: klavecimbel; Polish: klawesyn) is a musical instrument played by means of a keyboard.This activates a row of levers that turn a trigger mechanism that plucks one or more strings with a small plectrum made from quill or plastic. The strings are under tension …

In musical tuning, the Pythagorean comma (or ditonic comma), named after the ancient mathematician and philosopher Pythagoras, is the small interval (or comma) existing in Pythagorean tuning between two enharmonically equivalent notes such as C and B ♯ (Play (help · info)), or D ♭ and C ♯. It is equal to the frequency ratio (1.5) 12 ⁄ 2 7 = 531441 ⁄ 524288 ≈ …

A musical keyboard is the set of adjacent depressible levers or keys on a musical instrument.Keyboards typically contain keys for playing the twelve notes of the Western musical scale, with a combination of larger, longer keys and smaller, shorter keys that repeats at the interval of an octave.Pressing a key on the keyboard makes the instrument produce …

Scientific pitch notation (SPN), also known as American standard pitch notation (ASPN) and international pitch notation (IPN), is a method of specifying musical pitch by combining a musical note name (with accidental if needed) and a number identifying the pitch's octave.. Although scientific pitch notation was originally designed as a companion to scientific pitch (see …

Franz Schubert's Symphony No. 8 in B minor, D. 759 (sometimes renumbered as Symphony No. 7, in accordance with the revised Deutsch catalogue and the Neue Schubert-Ausgabe), commonly known as the Unfinished Symphony (German: Unvollendete), is a musical composition that Schubert started in 1822 but left with only two movements—though he lived for another six years.