Please help me to define diagnosis of the following illness.

@czarivey 

For God's sake, I don't think that it is an illness. Your listening habits and preferences are guided by you instincts and your drive. Your "mono" whatever is taking you where you want to go. Follow the journey. Don't second guess it. I initially thought your post was kind of crazy. But, in hindsight, it's not crazy at all. It's your musical journey. Enjoy the ride and embrace!! 

@mahgister 

I am always in awe of your words and wisdom. Thanks for your such soul driven perceptions. One comment I wanted to totally agree with you on:  "but some emotions conveyed in some music by some musicians, and I look for ecstasy because ecstasy lasts, fun do not last"

In the early 70's, BIRDS OF FIRE, the title cut from John McLaughlin's Mahavishnu Orchestra changed my life. It was the birth of early jazz fusion that hit my soul and heart like a drug. It was something that drew me out of body. I was around 14 years old then. I am 65 now, and when I hear that song I still feel the power, the spirit and the ecstasy that I felt so many years ago. Such a permeation into to the fabric of my life that will only die when I do.

I sometimes go through phases, right now I am not listening to any Classical or Jazz, although I like those genre's just fine and will hop on those bandwagons for months at a time. 

The only genre that seems to only last a few albums is Death Metal, although when I get in the mood, the house rocks.

I think what you are experiencing is normal behavior and probably does not need any medication - unless you want to....

@deadhead1000  Which death metal albums?

I like St Germain's Boulevard album.

@czarivey....*S*  You're fine, we all have our phases 'n phrases to play thru... ;)

I'm not a doctor, but I can look, act, and chat like one....in this circumstance:

"Take 2 Thorazine and don't call me in the morning....I'll bill you later...."

Semi-seriously...I like EDM, trance, and sim when I'm deep into work, or what I try to pass off as such.  Into the day, driving or just being driven to distract, 'odd rock' with a decent bass line to combat the 'boomers' (Not 'us', generationally....the bass buggys with the multi-subs, busily trying to loosen all the hardware holding the vehicle together....  "HEY!  IT'S CALLED PERMATEX!  TRY SOME!"  *jez...*  )

Sitting around, wasting network nanosec by the billions, whatever catches my ears and what little mind is left to snatch....

From the sweet:...and a end to the means...;)
...through to blatant.......been there...did that...do it now on ...request?! *LOL*
....like Lotus...like hillclimb contests = light+hp+handling yields loud zoom

....and, ultimately, Why......rockin' thru the wilder mess...

...to a soundtrack.......amongst many...

*S*  I'm not an udder phobic of the classics or the past, 

just borne of a different era, knowing what was, what is, and listening to where it's up to and going.....