Bing found the following results
Freesound
Royalty Free Music Download - Pixabay
90,000+ Free Sound Effects for Download - Pixabay - Pixabay
Royalty Free Stock Music, Download Free MP3s for Videos | Mixkit
Free Music for Youtube & Videos - No copyright claim
Background Music Free Download | No Copyright Music - Chosic
Freesound
Freesound
Music | No Copyright Song & MP3 Free Downloads - Pixabay
Music for Video Creators - Hear the Difference - Bensound
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