SPOTIFY EMBED:

<iframe src="https://embed.spotify.com/?uri=spotify%3Atrack%3A66z6KoQBTeIMGm1VxVUSrX" width="300" height="380" frameborder="0" allowtransparency="true"></iframe>

YOUTUBE EMBED:

<iframe width="560" height="315" src="https://www.youtube.com/embed/VbjepY-13g4" frameborder="0" allowfullscreen></iframe>

SOUNDCLOUD EMBED:

<iframe width="100%" height="166" scrolling="no" frameborder="no" src="https://w.soundcloud.com/player/?url=https%3A//api.soundcloud.com/tracks/293976992&amp;color=0066cc&amp;auto_play=false&amp;hide_related=false&amp;show_comments=true&amp;show_user=true&amp;show_reposts=false"></iframe>