In music, a half note (American) or minim (British) is a note played for half the duration of a whole note (or semibreve) and twice the duration of a quarter note (or crotchet). In time signatures with a denominator of 4, such as 4/4 or 3/4 time, the half note is two beats long.

Half notes are notated with a hollow oval note head (like a whole note) and a straight note stem with no flags (like a quarter note; see Figure 1). The half rest (or minim rest) denotes a silence for the same duration. Half rests are drawn as filled-in rectangles sitting on top of the middle line of the musical staff. As with all notes with stems, half notes are drawn with stems to the right of the notehead, facing up, when they are below the middle line of the staff. When they are on or above the middle line, they are drawn with stems on the left of the note head, facing down.

The note derives from the minima in mensural notation, which is Latin for 'least or smallest,' because at one stage it was the shortest of all note values used. The word minim comes from this name. The American term half note is a 19th-century loan translation of German halbe Note.

In music, the term note has two primary meanings:

Notes are the "atoms" of much Western music: discretizations of musical phenomena that facilitate performance, comprehension, and analysis.

The term "note" can be used in both generic and specific senses: one might say either "the piece 'Happy Birthday to You' begins with two notes having the same pitch," or "the piece begins with two repetitions of the same note." In the former case, one uses "note" to refer to a specific musical event; in the latter, one uses the term to refer to a class of events sharing the same pitch.

Two notes with fundamental frequencies in a ratio of any power of two (e.g. half, twice, or four times) are perceived as very similar. Because of that, all notes with these kinds of relations can be grouped under the same pitch class. In traditional music theory pitch classes are represented by the first seven letters of the Latin alphabet (A, B, C, D, E, F and G) (some countries use other names as in the table below). The eighth note, or octave is given the same name as the first, but has double its frequency. The name octave is also used to indicate the span of notes having a frequency ratio of two. To differentiate two notes that have the same pitch class but fall into different octaves, the system of scientific pitch notation combines a letter name with an Arabic numeral designating a specific octave. For example, the now-standard tuning pitch for most Western music, 440 Hz, is named a′ or A4. There are two formal ways to define each note and octave, the Helmholtz system and the Scientific pitch notation.

John Leslie "Wes" Montgomery (March 6, 1923 – June 15, 1968) was an American jazz guitarist. He is widely considered one of the major jazz guitarists, emerging after such seminal figures as Django Reinhardt and Charlie Christian and influencing countless others, including Pat Martino, George Benson, Russell Malone, Emily Remler, Kenny Burrell, Pat Metheny, Steve Howe, and Jimi Hendrix.

Montgomery was born in Indianapolis, Indiana. According to NPR Jazz Profiles "The Life and Music Of Wes Montgomery," the nickname "Wes" was a child's abbreviation of his middle name, Leslie. He came from a musical family; his brothers, Monk (string bass and electric bass) and Buddy (vibraphone and piano), were jazz performers. The brothers released a number of albums together as the Montgomery Brothers. Although he was not skilled at reading music, he could learn complex melodies and riffs by ear. Montgomery started learning the six string guitar at the relatively late age of 20 by listening to and learning the recordings of his idol, guitarist Charlie Christian, however he had played a four string tenor guitar since age twelve. He was known for his ability to play Christian's solos note for note and was hired by Lionel Hampton for this ability.

Leonard Joseph Tristano (19 March 1919 – 18 November 1978) was a jazz pianist, composer and teacher of jazz improvisation. He performed in the cool jazz, bebop, post bop and avant-garde jazz genres. He remains a somewhat overlooked figure in jazz history, but his enormous originality and dazzling work as an improviser have long been appreciated by knowledgeable jazz fans. In addition, his work as a jazz educator meant that he has exerted a substantial influence on jazz through figures such as Lee Konitz and Bill Evans.

Tristano was born in Chicago into an Italian immigrant family from Aversa. He was blind from infancy and studied piano and music theory from pre-teen years, graduating with a bachelor's degree from his home town's American Conservatory of Music in 1943.

Tristano's interest in jazz inspired a move to New York City in 1946. His advanced grasp of harmony pushed his music beyond even the complexities of the contemporary bebop movement, though Tristano was always explicit about acknowledging his enormous debt to Charlie Parker and Bud Powell. Other key ingredients in his style were Nat King Cole and Art Tatum, influences most audible in his early drummerless trio recordings. Though he and his followers remained at something of a slant to mainstream bebop, Tristano did on occasion play and record with bebop's preeminent figures such as Dizzy Gillespie and Charlie Parker, and Tristano was a pallbearer at Parker's funeral. Often the "Tristano school" has been contrasted with bebop, however, by being labelled "cool jazz", though this risks lumping his music in with unrelated styles like the West Coast cool jazz of the 1950s.

Lee Konitz (born October 13, 1927) is an American jazz composer and alto saxophonist born in Chicago, Illinois.

Generally considered one of the driving forces of Cool Jazz, Konitz has also performed successfully in bebop and avant-garde settings. Konitz was one of the few altoists to retain a distinctive sound in the 40s, when Charlie Parker exercised a tremendous influence on other players.

Konitz, like other students of pianist and theoretician Lennie Tristano, was noted for improvising long, melodic lines with the rhythmic interest coming from odd accents, or odd note groupings suggestive of the imposition of one time signature over another. Paul Desmond and, especially, Art Pepper were strongly influenced by Konitz.

Konitz's association with the Cool Jazz movement of the 1940s and 50s, includes participation in Miles Davis' epochal Birth of the Cool sessions, and his work with Lennie Tristano came from the same period. During his long career, Konitz has played with musicians from a wide variety of jazz styles.