A great Youtube channel called "musicneversleeps." One person that i love to listen to is Jason chen, who is the main cover artist of the channel. Here is his cover of the song "see you again" no introductions needed for this song, but he does an amazing cover, check out the channel, and this video.
https://www.youtube.com/channel/UC7OlHCKh1QLUGpVfRQwKA-g

he also has original songs of his own.