By posting this thread in the spirituality and metaphysics section i think it's in the right place. I understand you completely on this joeman. I believe your developing aversion to modern music is the awakening of your soul's knowing that most of it is not native to your soul vibration. You're losing your appetite for another of the world's dubious pleasures.
Anyone who is remotely interested in their spiritual health might want to consider the various effects of music on the body, the psyche and the spirit. It is not enough to say " I like music, so it has to be good for me." Some men like to drink two bottles of gin before beating their wives too but it's not much good. But i'm not saying music is no good. I am saying that some music is inherently harmful. So it's more than personal taste which should govern our affections and appetites for anything, including music, especially before we have developed spiritual discernment. Knowlege is power and in that spirit i offer this for anyone to take or leave...
Most people have read the old quote from that old control freak, grand daddy Rothschild... " i care not who makes the laws of the nation but let me create the credit."
Well there is another quote of about the same vintage by [ sorry i forget who]... " I care not who makes the laws but let me make the music."
Both of these quotes were spoken by people who understood the immense power both had to mold the individual consciousness of the masses.
We now understand the power of credit to control the masses but not too many people think twice about the music we are exposed to except to decide whether we like a particular musical style or song or whether we don't. Same with food. If we are drunk enough even Mcdonalds fries will taste great. If we are intoxicated enough on ego- consciousness even the [ozzy] Osbournes will sound great. That's a fair analogy because most modern music, rock, [c]rap, jazz etc... appeals to the lower- ego. But it's not just the sentiment expressed in the lyrics. It's the music. What's wrong with the music man? From a spiritual perspective, almost everything is wrong with it.
It is said that music moves the soul. That is true of some music like a lot of the classicals and ancient folk songs ... and a few bits and pieces of modern music. But today most of it moves the ego, especially since the voodoo rythym made it's way first into the precursors of jazz and then through that into rock n roll and all of it's derivatives since. Consider all the dis-chord inherent in a lot of the popular music and all of the wailing woe in the vocals. None of this originates in the soul or inner- spirit. It is born out of the self- love, self- pity and agression of the human consciousness and is therefore spiritless. It can only appeal to the same elements of the human consciousness in the audience. [Black] 'artist' and audience are one in group hysteria not in spirit. But why does it feel so good? Why does everything 'good' have to be bad for you? For the spiritual aspirant modern rock/pop, [c]rap etc is poison. Think 'the serpent in the garden offering you a beautiful fruit'.
"Nexus you liar! Put nexus to death for his blasphemy! Give us Motley Crue and black sabbath! Give us Megadeath, the Killers, Gorilaz and Jet! And crucify nexus! Liar!" Look settle down.... don't get carried away i'll explain to you what else is wrong with the music. It's really not much else.... honest. 
It's just that other 'inconsequential' part of your favourite songs... the rhythm and beat.
"aaah! ...hoist nexus by his own petard! This can't be true!"
If a human being was flesh only then it wouldn't be true and rock music wouldn't matter. But we are soul and spirit. Our native abode is in spiritual planes yet our spiritual nature is incarnate in this plane of matter. The AllGod has placed 7 major spiritual centers along the spine of each of us [the 7 virgins]. The spiritual light is anchored at the etheric level in each chakra and the flow of that energy can be unlocked through devotion, prayer, meditation and service. In these ways, the affirmation of the real self [the inner christ consciousness] causes the light of love to appear in our lives. The dark powers have for aeons devised methods to fool and trick people into focusing on the external consciousness and to ignite self love pride and agression. Anything to keep us from our first love. Many of these fallen beings were once cast into the earth having great knowlege of universal laws. They knew the science of sound because the great Spirit framed the worlds by the power of sound..... The Word. They knew they could corrupt this world and ourselves by inverting the divine harmony and divine rhythms inherent in nature and in ourselves.
They knew that, if allowed to flow naturally, the light within us should flow up the spine from the base chakra up to the heart chakra and on up to the crown chakra. If it does we will be fully enlightened by it. It says in the bible [something like] " To him that overcometh he shall be given the crown of life." This refers to the purified crown chakra in the person who succeeds in this process of raising up the [kundalini] light that is locked in the base chakra. Many people have accomplished this and moved on to spiritual realms but generally this kundalini force is largely dormant in most people on earth. If we can re- connect with inner- spirit and develop love in the heart this will act as a magnet to draw up the light from the lower chakras. This is very pertinent to rock music and i will explain what i know.
In the majority of people, the divine light does not rise naturally within because many alluring ways have been devised to cause us to sabotage ourselves in the process. The fallen beings, themselves cut off from the spiritual source of light, have devised many devious methods to steal that light from us by ensuring that we lose it in the lower chakras before it rises to the heart and crown. Different kinds of media have been produced to appeal to the human emotional nature [rather than the superior spiritual e- motion] and this is by design. Rock music and it's derivatives are just some of those media which force energy into motion in a way which misqualifies it in the lower planes.
Ideally, The 7 chakras are each activated by unique rhythms which help to unlock the flow of light energy within them. When i say "unlock" i mean that certain natural rhythms can help us attune to certain chakras [we don't even have to try] and so these rhythms help to cause the energy in the chakras to move and flow from the spiritual and etheric levels, into our mental, emotional and physical bodies to spiritually energise them.
The base chakra has 4 petals and the 4/4 time corresponds to the base chakra. It is the foundation of the pyramid. Naturally, the 4/4 time has the syncopation on the first beat... ONE 2, 3, 4 ONE 2, 3, 4 ONE 2, 3, 4 ONE 2, 3, 4. [some of the Indian bhajans have this rhythm]
But the rock beat corrupts the natural 4/4 time. While it is true that in it's most basic form the rock beat uses 4/4 time [and various close derivatives of the syncopated 4/4 timing] it has it's syncopation on the third beat instead of the first... 1, 2, THREE 4, 1, 2, THREE, 4, 1, 2, THREE, 4 1, 2, THREE, 4. It is counteracting the natural rhythm of the base chakra and assaulting the heart in order to oppose it's true manifestation. As this energy is drawn and inverted in a counter direction to the natural flow it produces a rush.
"Heaven [spiritual light] suffereth violence and the violent take it by force"
The rock beat is an anapestic beat and it is anti- lifeforce in it's effect. It is actually opposite to the heart beat and the heart chakra which is 3/4 time. ie. the natural rhythm of the heart chakra is ONE, 2, 3 ONE, 2, 3, ONE, 2, 3. [many old folk songs and the Strauss waltzes have this rhythm].
The voodoo rhythms of Africa were the inspiration for all their modern rhythmic derivatives in America and now the world. These rhythms force the energy DOWN the spinal altar into the lower chakras where they are expressed with unnatural force, forcing the chakras to turn and release the light energy in negative forms into the astral plane. As the energy is released it gives a certain exhilaration [like all "good" lifeforce stealing activities do] and so it is greatly enjoyed and greatly desired. Eventually people feel deflated, as all vampirous activities leave one feeling, and seeking the same activity for the same high, over and over.
But anyone who is finding 'true north' within, will eventually find that most modern music is pulling against the inner magnet of the soul and spirit. He/she will find it difficult or near impossible to maintain spiritual attunement in the face of what feels like an external chaotic onslaught tearing at the soul and trying to tear down the light and crack open the subconscious to get access to the old records of angst and agression.... and of course thereby, the light.