What makes it dirty?

i wanna make some song covers but i need just the instrumentals of the songs i want.

(preferbally rock songs) i already have the mic and a video and audio mixers/editers but i need just the instrumentals sounds.

please help.

My band does punk and some punk/hip hop. While going into hip hop a little more, I tried sampling some songs I had on my computer as an experiment. I found I’m very good at it. I want to increase the amount of songs I have to work with. What do you have in mind? Try to keep it hard rock.

Yesterday i had trouble breathing,was shaking,and my forehead was burning up. Now its better but when I’m doing nothing like sitting around, my heart beats really fast. What should i do?