ISRC (International Standard Recording Code) is a unique 12-character identifier assigned to individual sound recordings. It is used worldwide by streaming platforms, royalty collection agencies and music databases to identify and track recordings.

UPC (Universal Product Code) is a 12-digit barcode used to identify music releases (albums, EPs and singles) as commercial products. Every release requires a UPC for distribution and sales tracking.

Why is metadata important?

Accurate metadata ensures correct royalty collection, proper attribution to artists and contributors, proper categorization on streaming platforms and successful distribution. Incomplete or incorrect metadata can result in lost revenue and rejected releases.

How should artwork be prepared?

Artwork must be at least 3000x3000 pixels, in JPEG or PNG format, with RGB color mode and a 1:1 aspect ratio. It should be high quality, visually striking and compliant with platform guidelines. Use the Artwork Validator tool to check compliance.

What audio format should I use for distribution?

WAV (PCM) at 44,100 Hz sample rate and 16-bit or 24-bit depth is the industry standard. FLAC is also widely accepted as a lossless alternative. Avoid distributing in lossy formats like MP3 when possible.

Apple Music Guide — Music Resources

Apple Music Guide

8 min read Updated 2025-01-10

Delivery Requirements

Audio: WAV, FLAC or ALAC.
Sample rate: 44,100 Hz or 48,000 Hz.
Bit depth: 16-bit or 24-bit.
Artwork: 3000 x 3000 pixels, JPEG or PNG, RGB.

Audio Standards

Apple Music uses Sound Check for loudness normalization.
Target -16 LUFS integrated for Apple Music.
True peak should not exceed -1 dBTP.
Apple supports lossless (ALAC) and hi-res audio.

Artwork Standards

3000 x 3000 pixels minimum.
JPEG or PNG, RGB color space.
72 DPI minimum, 300 DPI recommended.
No transparency, no CMYK.

Metadata

All metadata must be complete and accurate.
Apple Music uses its own genre taxonomy.
Content advisory ratings must be set for explicit content.

Apple Music Features

Apple Music Sing — synchronized lyrics display.
Spatial Audio — Dolby Atmos immersive audio.
Music Videos — upload directly through Apple Music for Artists.

Mastered for iTunes

Apple encourages "Mastered for iTunes" — masters optimized for the platform's specifications. These masters should:

Be delivered at the highest quality possible.
Not have been converted from lossy formats.
Meet Apple's specific loudness and peak level requirements.

Related Resources

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