A licence to use 'Happy' by MBB as background music in ONE web or social media video without the need to credit the artist.
The video with licenced music can be uploaded on any social media. The license is perpetual, meaning that once purchased, the licensee can share the video using the song infinite times. The video can be monetized.
You cannot claim copyright on the music or take down other content using the same music/audio.
I will still own the copyrights to the song. You can't release the music under a different artist name, claim it to be your own original music, or use it to create new music.