It used to require a facebook account initially (at least here in Germany, right after the launch). I had to create a one in order to open a Spotify account. The option to register using an e-mail address was added later and I migrated my account when this was done.

Email sign up has been possible in New Zealand for a long time, years I think - billing is though Australia so I suspect we hang off them somehow. I haven't got a Facebook account.

It did when they first launched here. I dropped them an email and asked if they had plans to allow non-facebook users to use their service, and was politely told that they had no plans to do so because the social connections were central to their business.

I never gave them a second look to see if that requirement changed.