* Free Music Archive: A massive repository of over 150,000 royalty-free music files.
* Freesound: A crowdsourced database of audio files, including music, sound effects, and recordings.
* Jamendo: A platform for independent artists to share their music. Some tracks are available for free download, while others require a subscription.
* SoundCloud: A popular music streaming service that also allows users to download tracks for free. However, not all tracks are available for download, so be sure to check the license before using any music from SoundCloud.
* Epidemic Sound: Epidemic Sound is an online platform offering royalty-free music, sound effects, and audio loops.
* Incompetech: Incompetech offers a wide variety of free-to-use music tracks you can use for YouTube videos.
* AudioJungle: A marketplace where audio professionals sell their music. Some tracks are available for free, while others require a purchase.
* PremiumBeat: A subscription-based service that provides high-quality music and sound effects.