Yes, on a channel of any size. There is no subscriber limit. Use Fatstep tracks in your videos for free through the creator program, as long as you credit Fatstep.
What you get
Free MP3 tracks to use in your videos. You start with 20 tracks and unlock more as your videos go live with a Fatstep credit.
Creator downloads are a 192 kbps MP3. YouTube re-encodes every upload at a lower bitrate, so your viewers hear exactly the same thing as with a higher-quality file. If you want the 320 kbps MP3 or the lossless WAV (for a remaster, or to use the track outside YouTube), buy the track: purchases always come in both.
What we get
Videos that use our music receive a YouTube Content ID claim, so we are paid out of the advertising on those videos. That is the whole arrangement, and it is what pays for giving you the music free.
A Content ID claim is not a copyright strike. Your video stays up, your channel is never at risk, and viewers see no difference.
If you would rather keep your ad revenue
License the track through Songfindr instead. A Songfindr licence lets you have the claim released on your videos, so the revenue stays with you. It also covers things the creator program does not: client work, brand campaigns, games and broadcast.