When you upload a track to SoundCloud, you have two options for how you want to share it with other users: Public and Private.
Differences between public and private tracks
Public means that anyone can listen to your track, and it will show up on your SoundCloud profile page and your followers’ Streams. Private is exclusive, giving you control over who has access to your tracks and who doesn't. Private tracks won't show up on your public profile and can't be searched for within SoundCloud.
How to change your privacy settings
To change the sharing settings of your track, click on the bubble next to the word ‘private' or 'public' and click save.