Yes. If your channel has under 10,000 subscribers, you can 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 a set of tracks and unlock more as your videos go live with a Fatstep credit.
Will it cause a copyright problem?
Using a track through the creator program, with its credit link in your description, means you have permission to use it. Keep that link in place - it is your proof the track is authorized. Just make sure the credit is there before the video goes live.
Bigger channels
If your channel is over 10,000 subscribers, you license through Songfindr instead, and Fatstep will point you there.