From best to worst. ;-)
I’m curious fellas: why the organization by genre? I suppose if you have a hankerin’ for some Blues (or any other style) it would be handy. I did it that way when I was 17, but then I got a Mose Allison album. Jazz, or Blues?
At 18 I switched to alphabetical by artist (surname or group/band name), then chronological. Simple. Classical by composer, then alpha by title of work, and conductor/performer.