For all you uneducated dickwads calling me out, check your references.

MD"M"A is a well-known name for the drug Ecstasy.

http://en.wikipedia.org/wiki/MDMA

If MD"N"A is indeed her new album title, I find that a little coincidental...

...not to say that your lame suggestions aren't also plausible, I bet she was thinking of drugs when she thought that title was a great idea...