Talesin,
I would recommend getting into a pain clinic. I also had a 2 year wait (when I tried to get in and they told me 2 years - I cried and thought I won't be here if I have to wait 2 years! But here I am...)
I attended a pain clinic 12 years ago - and then again I'm at one now. There has been an incredible amount of progress in the past 10 years in regards to the understanding of pain - as you'd know, it is an incredibly complex issue.
I reckon that if music works for you, then that's great - doesn't matter whether there is evidence or not. Even if it's a placebo effect - who cares, if it helps you deal with pain, then it's real.
Obviously if you can avoid drugs, that's the way to go - and personally, I'd advise never to take narcs as a daily drug (unless elderly, then - why not) - only on occasion where the pain is serously significant. This way, you avoid the dependance / tolerance level increasing...
And I don't know what kind of pain you get, but for me - I find massage to be really beneficial. It doesn't help my actual pain (from the burns) but all of the other benefits just seem to help - better circulation so ulcers etc. will heal faster, help relieve sore muscles that have been thrown from walking with a limp, I also believe it helps with stress, depression etc. which as is well knows, makes existing pain feel worse.
Everyone's different, though I'd give it a go if you haven't. Has to be regular though - weekly or fortnightly at least - and by a proper trained therapist.