A normal search on YouTube will bring up an artist or group's VEVO channel, popular music videos, and even videos that don't have any music at all. If you're just looking for some tunes to listen to, a hashtag search will take you right to the good stuff.
YouTube is a great place to listen to free music even if we can't sign up for YouTube Red, and Fatima Wahab at AddictiveTips has a simple trick to help you skip to the listening. Add a hashtag before the artist's name with no spaces and search. For example, instead of "the decemberists" you would search "#thedecemberists" and be instantly greeted with their music-only related videos. You can explore the artist's album playlists or even dive into a randomised YouTube mix of their entire available library. It's a subtle difference in your search, but it's a neat little trick for filtering out all of the other stuff.