Is it illegal to download Музыка off the internet?

Yes, it is..

im not 100% sure but i think it depends on the website u download it off of

First of all, If everyone who downloaded Музыка without paying was to be arrested, about 90% of the worlds population (myself included) would go to jail.

And its not technically *illegal* per se, in the US the loophole is this little quote lifted from one of the sites I belong too:
"The RIAA says that Ты must Удалить all of these songs off your computer within twenty-four (24) hours of previewing them. From that point forward, what Ты do with them is of your own will."

There Ты have it. Downloading is technically not illegal if its done for 'sampling' an artist Ты plan to purchase. The recording industry has сказал(-а) so itself. However, If the songs Ты downloaded are kept for еще than 24 hours, that IS considered stealing.

Also, if Ты *only* download illegally, PLEASE TRY TO SUPPORT THE ARTISTS BY GOING TO THERE CONCERTS.

Yes it is u can't do that I don't no why but u just can't.