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slang.fyi

b-side

/ˈbiː saɪd/

Common

A track released alongside a single but not included on the main album, usually considered secondary but sometimes treasured by fans.

In the streaming era, the concept lives on metaphorically for any non-album release or bonus track. Calling something a b-side can mean it's overlooked or it's a hidden gem depending on tone.

Real-world examples4 examples
#ExampleWhat it meansSource
01found a b-side from 2004 i'd never heard and it's better than half the albumA non-album track from a physical single era outperforms what actually made the record.reddit, 2024
02criminally underrated b-side. this is what i mean when i say she always deliveredThe track is both unknown and genuinely excellent, used as evidence of the artist's quality.x, 2023
03this whole era had incredible b-sides. streaming ruined that formatThe speaker is lamenting that the single-plus-b-side physical format no longer exists.x, 2024
04the b-sides for this album campaign are honestly doing more than the lead singlesThe non-album release tracks are outperforming the main promoted songs.tiktok, 2023

Use it when

  • Referring to a track that was released alongside a single but not on the studio album.
  • Talking about overlooked or rare tracks in a discography.
  • Describing something as secondary or underappreciated.

Do not use it when

  • You mean a deep cut on an album, not a standalone release.Use “deep-cut” instead.
  • You mean a bonus track added to a deluxe edition.Use “bonus-track” instead.

Variations and related forms

b-sides and rarities

A category of releases collecting non-album material, often compiled for dedicated fans.

B-side vs deep cut

b-side

B-side is a track that was never on the album, released separately on a physical single.

VS

deep-cut

Deep cut is on the album but gets skipped by casual listeners.

Origin and context

From the physical era of vinyl 45rpm singles, which had an A-side for the main promoted song and a B-side for a secondary track. The term carried forward into cassette and CD single formats.

First seen
1950s
Confidence
high

Cite this page

Use this stable URL to reference the entry.

https://slang.fyi/b-side
Updated: 2026-08-28License: CC BY 4.0

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