Heptatonic scale in the context of "Pentatonic scale"

Diatonic and chromatic are terms in music theory that are used to characterize scales. The terms are also applied to musical instruments, intervals, chords, notes, musical styles, and kinds of harmony. They are very often used as a pair, especially when applied to contrasting features of the common practice music of the period 1600–1900.

These terms may mean different things in different contexts. Very often, diatonic refers to musical elements derived from the modes and transpositions of the "white note scale" C–D–E–F–G–A–B. In some usages it includes all forms of heptatonic scale that are in common use in Western music (the major, and all forms of the minor).

In music theory, a diatonic scale is a heptatonic (seven-note) scale that includes five whole steps (whole tones) and two half steps (semitones) in each octave, in which the two half steps are separated from each other by either two or three whole steps. In other words, the half steps are maximally separated from each other.

The seven pitches of any diatonic scale can also be obtained by using a chain of six perfect fifths. For instance, the seven natural pitch classes that form the C-major scale can be obtained from a stack of perfect fifths starting from F:

A pentatonic scale is a musical scale with five notes per octave, in contrast to heptatonic scales, which have seven notes per octave (such as the major scale and minor scale).

Pentatonic scales were developed independently by many ancient civilizations and are still used in various musical styles to this day. As Leonard Bernstein put it: "The universality of this scale is so well known that I'm sure you could give me examples of it, from all corners of the earth, as from Scotland, or from China, or from Africa, and from American Indian cultures, from East Indian cultures, from Central and South America, Australia, Finland ...now, that is a true musico-linguistic universal." There are two types of pentatonic scales: those with semitones (hemitonic) and those without (anhemitonic).

The modern Lydian mode is a seven-tone musical scale formed from a rising pattern of pitches comprising three whole tones, a semitone, two more whole tones, and a final semitone.

Because of the importance of the major scale in modern music, the Lydian mode is often described as the scale that begins on the fourth scale degree of the major scale, or alternatively, as the major scale with the fourth scale degree raised half a step. This sequence of pitches roughly describes the scale underlying the fifth of the eight Gregorian (church) modes, known as Mode V or the authentic mode on F, theoretically using B♮ but in practice more commonly featuring B♭. The use of the B♭ as opposed to B♮ would have made such piece in the modern-day F major scale.

A thaat (IAST: thāṭ) is a "parent scale" in North Indian or Hindustani music. It is the Hindustani equivalent of the term Melakartha raga of Carnatic music. The concept of the thaat is not exactly equivalent to the western musical scale because the primary function of a thaat is not as a tool for music composition, but rather as a basis for classification of ragas. There is not necessarily strict compliance between a raga and its parent thaat; a raga said to 'belong' to a certain thaat need not allow all the notes of the thaat, and might allow other notes. Thaats are generally accepted to be heptatonic by definition.

The term thaat is also used to refer to the frets of stringed instruments like the sitar and the veena. It is also used to denote the posture adopted by a Kathak dancer at the beginning of their performance.

The xylophone (from Ancient Greek ξύλον (xúlon) 'wood' and φωνή (phōnḗ) 'sound, voice'; lit. 'sound of wood') is a musical instrument in the percussion family that consists of wooden bars struck by mallets. Each bar is an idiophone tuned to a pitch of a musical scale, whether pentatonic or heptatonic in the case of many African and Asian instruments, diatonic in many western children's instruments, or chromatic for orchestral use.

The term xylophone may be used generally, to include all such instruments such as the marimba, balafon and even the semantron. However, in the orchestra, the term xylophone refers specifically to a chromatic instrument of somewhat higher pitch range and drier timbre than the marimba, and these two instruments should not be confused. A person who plays the xylophone is known as a xylophonist or simply a xylophone player.

The half diminished scale is a seven-note musical scale. It is more commonly known as the Locrian ♮2 scale or the Aeolian ♭5 scale, names that avoid confusion with the diminished scale and the half-diminished seventh chord (minor seventh, diminished fifth). It is the sixth mode of the ascending melodic minor scale.

In the key of B♭, the half-diminished scale built on C is associated with Cm, which functions as a ii chord in minor (see chord-scale system).