Let me get to the crux of yor questions and see if I can lead you somewhere devoid of my personal opinions of your examples. Please forgive the length of what I say, and try to take it all in. It’s something I spent years trying to figure out, and may not quite be there, but let me take a stab. You asked:
Is it a contradiction that I am an Objectivist, yet like non-Objectivist music? Or is it simply a psychological matter and not a philosophical one?
There is no “Objectivist” or “non-Objectivist” music. Music is sound organized in time - that’s it. Composition is the artful craft of writing music.
Rand loved her “tiddlywink” music, and praised Rachmaninov and Tchaikovsky passages, but that’s not an endorsement, only a preference. As she stated in RM , music reaches the emotions first, the reverse of the cognitive process one uses to judge a painting or novel. Your only choices when listening to music are a positive, life-affirming response or a negative one that results from a dulling of your senses. And it’s rarely easy to make that assessment at first. When you learn to listen, really actively listen, to what you’re hearing, it gets easier.
If one uses music as a drug, though, your judgement of how it works in your life never sharpens. For those people, music either reinforces their mood, or they use it to escape from a mood. If one is particularly frustrated after a day of getting poked and prodded by life’s slings and arrows, that person might blow off some steam with System of a Down; another person might pour some wine and relax to some Sarah Maclachlan. I think this is an inappropriate and damaging way to integrate music into your life, though. Does your music control you, or inspire you?
Another point about there being no “Objectivist” music: Music (tones produced by a musical instrument or voice) has no political, philosophical, or religious affiliation - only words set to music do. Does four-part harmony mean it’s a Protestant Hymn? Only if the sung words are about Jesus. A hymn’s melodic and harmonic structure could be imitated, then arranged for a brass quintet - is it a hymn now? It’s an original composition, titled “Opus 24”, and has no words; only one’s association and familiarity with the traditional “sound” of hymns makes one think it might indeed be a hymn … but it’s not.
With this in mind, you can enjoy a choral Mass (awesome live); the funk vamps in hip-hop; the masculine punch of a tight, chunky guitar riff; the traffic-battling rush of drum’n’bass; the playfulness of improvised jazz; the sonic cartoons of a sophisticated Zappa guitar solo; the tempting sensuality of a greasy trip-hop beat … the list could go on and on.
So where would the contradicitions lie?
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If you’re extolling the values and virtues of capitalism while singing (with passion and sincerety) the lyrics of Rage Against the Machine.
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You desire the happiness of a sophisticated and well-lived existence, but try to reinforce it with music that appeals to baser urges.
Another contradiction could lie in what you may be supporting beyond the music. After all, (most) pop music is a commodity endorsed by its performers. What they preach and what they practice could be destructive, if their entire “act” is aimed, not at creating awareness or uplifting people, but in dragging them down into the mud. It sucks to like a song and not buy the CD, but doing so anyway is one of those little moral compromises can corrode your philosophical armor. Whatever you like, there are 50 others doing the same thing, but may be saying something completely different. (Have you heard of “Christian Death Metal”?) Just like what you buy at the grocery store, your dollars at the record store support more than musicians. (No, this is not an excuse for stealing from P2P networks … but I digress.)
Music by itself speaks directly to your sense of life, and if integrated properly, it allows you to celebrate the acheivement and ecstacy you can have in your life. Music, to the simple appreciator or the most prolific composer, is spiritual - not mystical - food. Not to go too far with an analogy, but how nutritious is your musical food? Is it all burgers and Pepsi, or filet mignon and Chablis?
Your music - whatever you choose for your life - does not have a genre, an costume, a style, a particular harmonic language, or set of voice-leading rules. It does not allow you to believe that a major chord is “happy” and a minor chord is “sad”, or that Shostakovich is better for you than Zamfir, Master of the Pan-Flute.
It moves you positively; it affects the best parts of yourself, and in some meaningful way allows you to say “Yes! This is what I am!”
If this isn’t what you feel when you listen to your music, or if the music you choose brings you any sense of (dare I say?) guilt about how it speaks to your sense of life: Check your premises, and find something else to listen to.