Audio license for video intro/outro


I’m considering purchasing a audio track to use in the intro/outro of my YouTube videos.

The intro/outro will basically display my logo with the audio on the background.

And that same intro/outro will be in every video of the channel.

Later on I plan to post videos with that same intro/outro on other web platforms as well (for instance in a course on my website, Udemy, Teachable or related).

Does that violate the “single product or project” of the standard license or any other item of that license or I can proceed?

Also… I need to credit the music in the video description as well even having purchased the license?