Free download music to iTunes

In fact, there is no free download on iTunes. If you want to download music on iTunes, you need an account which you need to use credit card to pay money to create account or you can buy iTunes cards to create account. I don't think HK Apple Store sell iTunes cards.
For more information about iTunes cards:
http://mactivity.com.hk/itunes_card.htm
How to create account by iTunes cards:
http://www.youtube.com/watch?v=U6fjfiFx_cA

Free music download link:
4shared.com http://www.4shared.com/
you can also go to Youtube and search "song name+download" and click the video, if you see the link in the information bar is mediafire, you can download the song.

2012-02-27 23:02:22 補充：
建立 iTunes 帳號（無痛版本）
http://mactivityhongkong.blogspot.com/2009_04_01_archive.html

http://www.downloads.nl/results/mp3/1/high+school+musical

you can find almost every songs here,i promise.
you can also find lots of different singers here.
hope you'll like it.