Harmonist's introduction trailer makes use of the following material under libre licenses. + Music promoted by La Musique Libre HolFix - Happy Theme: https://youtu.be/By4BvU123A0 HolFix: https://soundcloud.com/holfix cc-by-sa + Music promoted by La Musique Libre Symphony - Brave Soul : https://youtu.be/4rAGTpYw_lY Symphony : https://soundcloud.com/makai-symphony cc-by 4.0 + SoleƔ_para_Bailar (from wikicommons) public domain + Spring (video from the Blender Foundation) cc-by 4.0