It is pretty common for there to be multiple recording of the same songs. Some examples of this would be live versions, remastered versions, covers, etc.
If there are multiple recordings of the same composition, you do not need to make a separate registration. You would simply just attach multiple recordings (ISRC's) to the same composition.
This can be done by clicking on the song from the 'Songs' page in your account. Once you click on it, you will see a red button on the upper right hand side of the page that says 'Add another recording'.
This will then prompt you to add a recording the same way you added the first one:
If you have any questions about this, feel free to use our chat box or watch our detailed video on Adding a Song.