Yes, I know about Nick Hornby. I have read his essays in which he defined the actual meaning of music. I always enjoy reading his excellent essays, and I am sure his new novel/movie High Fidelity is also a great piece of art.
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Songbook - essays on music
For those of you who know Nick Hornby - he wrote the novel/movie "High Fidelity" - he published a collection of essays exploring the meaning of music and how songs can get in our heads and define our growing up. It is called "Songbook" published by Riverhead Books in 2003. Give it a read. The essays are sharp, witty, and very enjoyable.