In audio engineering, a fade is a gradual increase or decrease in the level of an

audio signal An audio signal is a representation of sound, typically using either a changing level of electrical voltage for analog signals, or a series of binary numbers for digital signals. Audio signals have frequencies in the audio frequency range of ro ...

. The term can also be used for film cinematography or theatre lighting in much the same way (see fade (filmmaking) and fade (lighting)). A recorded

song A song is a musical composition intended to be performed by the human voice. This is often done at distinct and fixed pitches (melodies) using patterns of sound and silence. Songs contain various forms, such as those including the repetiti ...

may be gradually reduced to silence at its end (fade-out), or may gradually increase from silence at the beginning (fade-in). Fading-out can serve as a recording solution for pieces of music that contain no obvious ending. Both fades and crossfades are very valuable since they allow the engineer to quickly and easily make sure that the beginning and the end of any audio is smooth, without any prominent glitches.Langford, S. 2014. Digital Audio Editing. Burlington: Focal Press. pp. 47-57. It is necessary that there is a clear section of silence prior to the audio. Fade-ins and -outs can also be used to change the characteristics of a sound, such as to soften the

attack Attack may refer to: Warfare and combat * Offensive (military) * Charge (warfare) * Attack (fencing) * Strike (attack) * Attack (computing) * Attack aircraft Books and publishing * ''The Attack'' (novel), a book * '' Attack No. 1'', comic an ...

in vocals where very plosive (‘b’, ‘d’, and ‘p’) sounds occur. It can also be used to soften up the attack of the drum and/or percussion instruments. A crossfade can be manipulated through its rates and coefficients in order to create different styles of fading.Rumsey, F. & McCormick, T. 1992. Sound and Recording. Burlington: Focal Press. pp. 241, 282-284. Almost every fade is different; this means that the fade parameters must be adjusted according to the individual needs of the mix.Nisbett, A. 1962. The Technique of the Sound Studio. London & New York: Focal Press. Professional turntablists and DJs in hip hop music use faders on a DJ mixer, notably the horizontal crossfader, in a rapid fashion while simultaneously manipulating two or more

record players A phonograph, in its later forms also called a gramophone (as a trademark since 1887, as a generic name in the UK since 1910) or since the 1940s called a record player, or more recently a turntable, is a device for the mechanical and analogu ...

(or other sound sources) to create "

scratching Scratching, sometimes referred to as scrubbing, is a DJ and turntablist technique of moving a vinyl record back and forth on a turntable to produce percussive or rhythmic sounds. A crossfader on a DJ mixer may be used to fade between two rec ...

" and develop beats. Club DJs in

house music House is a music genre characterized by a repetitive four-on-the-floor beat and a typical tempo of 120 beats per minute. It was created by DJs and music producers from Chicago's underground club culture in the late 1970s, as DJs began altering ...

and

techno Techno is a Music genre, genre of electronic dance music (EDM) which is generally music production, produced for use in a continuous DJ set, with tempo often varying between 120 and 150 beats per minute (bpm). The central Drum beat, rhythm is typ ...

use DJ mixers, two or more sound sources (two record players, two iPods, etc.) along with a skill called beatmatching (aligning the beats and tempos of two records) to make seamless dance mixes for dancers at raves,

nightclub A nightclub (music club, discothèque, disco club, or simply club) is an entertainment venue during nighttime comprising a dance floor, lightshow, and a stage for live music or a disc jockey (DJ) who plays recorded music. Nightclubs gener ...

s and dance parties. Though relatively rare, songs can fade out then fade back in. Some examples of this are " Helter Skelter" and "

Strawberry Fields Forever "Strawberry Fields Forever" is a song by the English rock band the Beatles, written by John Lennon and credited to Lennon–McCartney. It was released on 13 February 1967 as a double A-side single with " Penny Lane". It represented a depart ...

" by

The Beatles The Beatles were an English rock band, formed in Liverpool in 1960, that comprised John Lennon, Paul McCartney, George Harrison and Ringo Starr. They are regarded as the most influential band of all time and were integral to the developm ...

, "

Suspicious Minds "Suspicious Minds" is a 1968 song written and first recorded by American songwriter Mark James. After this recording failed commercially, it was cut by Elvis Presley with producer Chips Moman, becoming a No. 1 song in 1969, and one of the most ...

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Elvis Presley Elvis Aaron Presley (January 8, 1935 – August 16, 1977), or simply Elvis, was an American singer and actor. Dubbed the "Honorific nicknames in popular music, King of Rock and Roll", he is regarded as Cultural impact of Elvis Presley, one ...

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Shine On Brightly ''Shine On Brightly'' is the second studio album by English rock band Procol Harum, released in 1968 by record labels Regal Zonophone and A&M. It is considered an early example of progressive rock. The album's single, "Quite Rightly So", faile ...

" by

Procol Harum Procol Harum () were an English rock band formed in Southend-on-Sea, Essex in 1967. Their best-known recording is the 1967 hit single "A Whiter Shade of Pale", one of the few singles to have sold over 10 million copies. Although noted for t ...

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Sunday Bloody Sunday "Sunday Bloody Sunday" is a song by Irish rock band U2. It is the opening track from their 1983 album '' War'' and was released as the album's third single on 21 March 1983 in the Netherlands and West Germany. "Sunday Bloody Sunday" is noted ...

" by

John Lennon John Winston Ono Lennon (born John Winston Lennon; 9 October 19408 December 1980) was an English singer, songwriter, musician and peace activist who achieved worldwide fame as founder, co-songwriter, co-lead vocalist and rhythm guitarist of ...

and

Yoko Ono Yoko Ono ( ; ja, 小野洋子, Ono Yōko, usually spelled in katakana ; born February 18, 1933) is a Japanese multimedia artist, singer, songwriter, and peace activist. Her work also encompasses performance art and filmmaking. Ono grew up i ...

, "

That Joke Isn't Funny Anymore "That Joke Isn't Funny Anymore" is a song by the English rock band the Smiths. The full-length version of the song appears on the album '' Meat Is Murder''. It was the sole track from the album to be released, in edited form, as a UK single. Th ...

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The Smiths The Smiths were an English rock band formed in Manchester in 1982. They comprised the singer Morrissey, the guitarist Johnny Marr, the bassist Andy Rourke and the drummer Mike Joyce. They are regarded as one of the most important acts to em ...

, " Thank You" by

Led Zeppelin Led Zeppelin were an English rock band formed in London in 1968. The group comprised vocalist Robert Plant, guitarist Jimmy Page, bassist/keyboardist John Paul Jones, and drummer John Bonham. With a heavy, guitar-driven sound, they are c ...

, " It's Only Money, Pt. 2" by

Argent In heraldry, argent () is the tincture of silver, and belongs to the class of light tinctures called "metals". It is very frequently depicted as white and usually considered interchangeable with it. In engravings and line drawings, regions t ...

, " The Great Annihilator" by Swans, " (Reprise) Sandblasted Skin" by

Pantera Pantera () is an American heavy metal band from Arlington, Texas formed in 1981, and currently comprised of vocalist Phil Anselmo, bassist Rex Brown, and touring musicians Zakk Wylde and Charlie Benante. The group's best-known lineup consist ...

, "Illumination Theory" and "At Wit's End" by

Dream Theater Dream Theater is an American progressive metal band formed in 1985 under the name Majesty by John Petrucci, John Myung and Mike Portnoy while they attended Berklee College of Music in Boston, Massachusetts. They subsequently dropped out of the ...

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Future The future is the time after the past and present. Its arrival is considered inevitable due to the existence of time and the laws of physics. Due to the apparent nature of reality and the unavoidability of the future, everything that currentl ...

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Paramore Paramore is an American rock band from Franklin, Tennessee, formed in 2004. The band currently consists of lead vocalist Hayley Williams, guitarist Taylor York and drummer Zac Farro. Williams and Farro are founding members of the group, w ...

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Doomsday Doomsday may refer to: * Eschatology, a time period described in the eschatological writings in Abrahamic religions and in doomsday scenarios of non-Abrahamic religions. * Global catastrophic risk, a hypothetical event explored in science and fict ...

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MF Doom Daniel Dumile ( ; July 13, 1971October 31, 2020), best known by his stage name MF Doom or simply Doom (both stylized in all caps), was a British-American rapper and record producer. Noted for his intricate wordplay, signature metal mask, and ...

, " Outro" by M83, "Cold Desert" by

Kings of Leon Kings of Leon is an American rock band formed in Nashville, Tennessee, in 1999. The band is composed of brothers Caleb, Nathan and Jared Followill, and their cousin Matthew Followill. The band's early music was a blend of Southern rock and ...

, and "The Edge Of The World" by DragonForce.

History

Origins and early examples

Possibly the earliest example of a fade-out ending can be heard in

Joseph Haydn Franz Joseph Haydn ( , ; 31 March 173231 May 1809) was an Austrian composer of the Classical period. He was instrumental in the development of chamber music such as the string quartet and piano trio. His contributions to musical form have le ...

's Symphony No. 45, nicknamed the "Farewell" Symphony on account of the fade-out ending. The symphony which was written in 1772 used this device as a way of courteously asking Haydn's patron Prince Nikolaus Esterházy, to whom the symphony was dedicated, to allow the musicians to return home after a longer than expected stay. This was expressed by the players extinguishing their stand candles and leaving the stage one by one during the final adagio movement of the symphony, leaving only two muted violins playing. Esterházy appears to have understood the message, allowing the musicians to leave.

Gustav Holst Gustav Theodore Holst (born Gustavus Theodore von Holst; 21 September 1874 – 25 May 1934) was an English composer, arranger and teacher. Best known for his orchestral suite '' The Planets'', he composed many other works across a range ...

's "Neptune, the mystic", part of the orchestral suite ''

The Planets ''The Planets'', Op. 32, is a seven- movement orchestral suite by the English composer Gustav Holst, written between 1914 and 1917. In the last movement the orchestra is joined by a wordless female chorus. Each movement of the suite is named ...

'' written between 1914 and 1916, is another early example of music having a fade-out ending during performance. Holst stipulates that the women's choruses are "to be placed in an adjoining room, the door of which is to be left open until the last bar of the piece, when it is to be slowly and silently closed", and that the final bar (scored for choruses alone) is "to be repeated until the sound is lost in the distance"."The Planets" (full orchestral score): Goodwin & Tabb, Ltd., London, 1921 Although commonplace today, the effect bewitched audiences in the era before widespread recorded sound—after the initial 1918 run-through, Holst's daughter Imogen (in addit