I hate some minecraft music?

If you mean that background music, then go into settings and look through it until you find the option to mute it.

Simply mute the music in the settings if you don't like it.

You can't block or delete some minecraft music. You have to either listen to it or not listen to it at all. To not listen, just hit the 'esc' button located on the upper left of your keyboard, then use your mouse (the thing that you use to look around when you play minecraft) and move it so that it'll hover over 'settings' (if i'm not mistaken) then push down the mouse button until you hear a click sound. You will see a new screen, then, find sound settings. Then do what you did to settings. You'll enter another new screen and then you'll see music settings or sound or something like that. Then by default it should be 100%. Then just hold down your right finger when your arrow thing os over the vertical little stick. Then, move it to the volume you desire. Then keep on clicking done until you can't find it anymore. Then, click the fabulous back to game button. After that, you won't hear anymore c418 music anymore but the awesome eminem music that you're playing in the background!