# Slowed down and sped up audio: New release group?

**URL:** https://community.metabrainz.org/t/slowed-down-and-sped-up-audio-new-release-group/597858
**Category:** Style
**Tags:** pitch, digital-media, speed
**Created:** [August 20, 2022, 3:40am UTC](https://community.metabrainz.org/t/slowed-down-and-sped-up-audio-new-release-group/597858 "2022-08-20T03:40:33Z")
**Posts on this page:** 1
**Showing post:** 5

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### Author: ![UltimateRiff](https://community.metabrainz.org/user_avatar/community.metabrainz.org/ultimateriff/32/47799_2.png) [@UltimateRiff](https://community.metabrainz.org/u/UltimateRiff)
#### Post date: [August 25, 2022, 4:34am UTC](https://community.metabrainz.org/t/slowed-down-and-sped-up-audio-new-release-group/597858/5 "2022-08-25T04:34:34Z")

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after reading the mastering section in the [Glossary](https://musicbrainz.org/doc/Terminology#mastering) docs (and the [Wikipedia article](https://en.wikipedia.org/wiki/Mastering_(audio)) linked therein), I believe speed changes are not in the realm of mastering. also, I feel there’s more artist intent involved with sped up/slowed mixes than with (re-)mastering. (not necessarily the original artist’s intent, mind you)

see also the [Know Your Meme](https://knowyourmeme.com/memes/cultures/nightcore) and [Wikipedia](https://en.wikipedia.org/wiki/Nightcore) entries for Nightcore, which both call this type of recording both an “edit” and a “remix”.

* * *

either way, there’s different AcoustIDs and ISRCs\* between these sped up versions, so that is data that might be lost/muddled.

\*at least, in the case of a random sample I pulled up, Lights: ([original](https://musicbrainz.org/recording/e8b32cd0-f354-4956-8ffe-2f9675ba18a2) and [remix](https://musicbrainz.org/recording/e92357c4-3c81-40f3-8c8d-fcb5ea1f4bfa))

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