As long as you hold the rights to the music you upload on Feiyr.com, you can sell your Mp3
without any problems. You do not need a label. When you create a label in your account, just pay attention not to use someone else's name and not to infringe trademark rights (e.g. "Coca Cola Records" would be a trademark infringement).
The licensor expressly guarantees that all the files and the labels signed up to DANCE ALL DAY (DAD) will not be distributed to any other distributors or to any other download stores. Read the license agreement
for more information.