Shuffle play is a mode of music playback in which songs are played in a

random In common usage, randomness is the apparent or actual lack of pattern or predictability in events. A random sequence of events, symbols or steps often has no order and does not follow an intelligible pattern or combination. Individual rand ...

ized order that is decided upon for all tracks at once. It is commonly found on

CD player A CD player is an electronic device that plays audio compact discs, which are a digital audio, digital optical disc data storage device, data storage format. CD players were first sold to consumers in 1982. CDs typically contain recordings of a ...

digital audio player A portable media player (PMP) (also including the related digital audio player (DAP)) is a portable consumer electronics device capable of storing and playing digital media such as audio, images, and video files. The data is typically stored o ...

s and media player software. Shuffle playback prevents repeated tracks, which makes it distinct from random playback, in which the next track is chosen at random after the last track has ended.

In CD players

In a CD player one can only shuffle songs on that CD, or with some models that could hold more than one CD, shuffle the songs on all of those CDs. Some CDs have been designed for the shuffle feature on CD players, such as

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' '' Apollo 18''. More modern CD players come with the shuffle feature.

In media devices

Almost all

software Software is a set of computer programs and associated documentation and data. This is in contrast to hardware, from which the system is built and which actually performs the work. At the lowest programming level, executable code consists ...

on computers has the shuffle feature including

Windows Media Player Windows Media Player (WMP) is the first media player (application software), media player and media library application that was developed by Microsoft for playing sound reproduction, audio, video and viewing images on personal computers runnin ...

and

MediaMonkey MediaMonkey is a digital media player and media library application developed by Ventis Media Inc., for organizing and playing audio on Microsoft Windows and Android operating systems. MediaMonkey for Windows (sometimes noted as MMW) includes ...

. Most electronic devices including

mobile phones A mobile phone, cellular phone, cell phone, cellphone, handphone, hand phone or pocket phone, sometimes shortened to simply mobile, cell, or just phone, is a portable telephone that can make and receive calls over a radio frequency link whil ...

and

iPod The iPod is a discontinued series of portable media players and multi-purpose mobile devices designed and marketed by Apple Inc. The first version was released on October 23, 2001, about months after the Macintosh version of iTunes wa ...

s have the shuffle feature and devices have even been created just for the shuffle feature, such as the

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iPod Shuffle The iPod Shuffle (stylized and marketed as iPod shuffle) is a discontinued digital audio player designed and formerly marketed by Apple Inc. It was the smallest model in Apple's iPod family, and was the first iPod to use flash memory. The firs ...

. Media devices and players can usually shuffle more than just albums: they can also shuffle all of an artist's music, all of the music in a certain genre, and even all songs on the device. Users can also create playlists of whatever songs they like and shuffle them. Applications of randomness Digital audio players {{Sound-tech-stub