Epidemic Sound - Website with licensed music to use in youtube videos
Audio Hero - Over 250,000 royalty free music & sound effects for videos
Zapsplat - Zapsplat Royalty free music is a website that covers an extensive list of royalty-free music, making you download over 85000 sounds effects in a very format like Mp3, FLAC, M4A, WAV, ACC, and many others.
TunePocket - Download 11,000+ royalty free music tracks and sound FX. Buy once, use forever. New music added daily. Save over 50% compared to most popular similar services. Incredible value!
Mixkit Free Sound Effects - Mixkit Free Sound Effects is a website that is introduced for incredible free sound effects, making you use in your cinematic projects without any hurdle.
Premiumbeat - Premiumbeat.com provides high quality Royalty Free Music.