WordPress comes with several default user-levels that can be used for a team of administrators or a following of fans. Each page and post can also be password-protected in addition to or instead of issuing a user name and password.
Restrict certain pages to members only and require a user name and login. Hook your fans by offering free downloads or restricted content.
You can hide your website from Search Engines so that nobody finds it searching the net. Have a secret website for your upcoming CD release with a MP3free download.