Spotify - Map shows when two people play same song at same time
Vidlis - Create music playlists from YouTube videos.
SoundCloud - Enjoy music & follow favourite artists
Tuned Rocks📺 - Discover🔎 curated Youtube videos 24/7
SoundClick - SoundClick is a music-based social community.
OrganizeTube - Create video playlists from Youtube, Vimeo and other sources