This work has been identified to be in the public domain and is free to use and reuse without restriction. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission. Attribution is recommended but not required.
Also see this detailed guide covering the copyright and ethical considerations of digital sampling of audio and video materials.
Why is this free to use?
Citizen DJ provides a subset of films from the National Screening Room that were identified to have been created by the U.S. government, thus are in the public domain.
Drum machine sounds
All drum machine sounds were generated from drumkits provided by Slackermedia Multimedia Sprint v2 and were made available under a Creative Commons Attribution-ShareAlike 3.0 license. The audio files that I derived from the drumkits can be downloaded from Github and is available under a Attribution-ShareAlike 4.0 International, which means you can (1) copy and redistribute the files in any medium or format, and (2) remix, transform, and build upon the material for any purpose, even commercially as long as you give appropriate credit and distribute under the same license.
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