No. Only artists who have opted into the YouTube program are available for you to use with your subscription. That still gives you access to hundreds of tracks and counting across tons of genres, including Blue Stahli, Celldweller, Josh Money, Rockman, and many more! Please keep in mind that just because an artist in the program that not every song by them is cleared.
To find music that's cleared, you may do a search with the FiXT Store's new and improved search system. Check the YouTube Partners box and perform a search, and all music in the store cleared for the program will populate your results. You can further narrow your search by genres, artists, and more!