I made the same mistake as everyone else and opened the civilian page first, but didn't actually have any problems deleting it, although you do have to wait 48 hours before opening the new one, so perhaps they've overcome that problem.

I overcame the problem of the email addresses by opening a free Hotmail account specifically for the second site I wanted to do, and I've now got two , one for myself and one for the duo I play in, and am about to do a third for a charity project I'm involved in.

I did have some problems finding the "Artist Sign-up page" so here it is:

http://signups.myspace.com/index.cfm?fuseaction=signupBand

To load up music files, you'll need to convert them to MP3s and go to "Edit Profile" then "Manage Featured Songs"