The World's Greatest Music of All-Time - Can You Help?

I've decided to embark on an ambitious project to bring myself up-to-speed with music. I thought it would be a delightful idea to compile a DVD (the one with the highest capacity, 9GBish I think) with the world's greatest music of all-time. It's going to take a while but I've set out a little time every week to work on it so hopefully it will be finished by the end of the year. Unfortunately, my knowledge of good music is very weak. I'd like to think I know a lot of good music but the truth is, I don't. Which is where you guys come in. All you need to do is list songs which deserve to be part of the compilation. Don't worry if others have listed the same before you. And don't limit yourself to just a few tracks. More than 1000 songs are going to make the final cut and if it turns out there's enough for two DVDs, all the better. It's amazing how much cheerier life has become now that I find myself listening to nothing but incredible music. And of course, any of your contributions that make the final cut, will be suitably acknowledged in a special custom designed album cover. To help you find this entry easily, I've post-dated it to 31 December 2011 so it will always be the first one to appear when you view my journal home page. Don't limit yourself to just English music. I want stuff from all over the world. I don't care if it's just a beat. If you think it's good, share it. Even if it doesn't make the final cut, it'll still make a great addition to my mediocre collection of music. I love being introduced to great new music. Tonight alone (8 Dec 08) I've discovered one of the greatest opera singers of all-time, Enrico Caruso. His stuff is so good it's convinced me to buy a gramophone once I start earning again. So get in!

EDIT 1: Gramophone (well a USB-emboldened laser record player) added to collection, Feb 2009.
EDIT 2: 30+ vinyls and growing. Thanks to everybody who has contributed to my budding collection. :)