It depends. If you are making a video that you aren't monetizing on YouTube, then you may use the free plan of our YouTube Music Program at no extra cost as long as you follow the conditions set forth in the program! This means you must provide credit and store links to the artist's FiXT Store page (which is always easy to find..
If you are planning to monetize your video with ads or uploading to a third party network channel that monetizes their content, you will need to acquire a FiXT YouTube Music Program Subscription or separate a la carte license. Simply purchasing the artists work alone does not grant you permission to upload and enable advertising in a video with the music in it!