if it is formatted as NTFS, the usual tools will suffice. However given the state of the drive, you may not get anything back.
http://www.google.co.uk/search?hl=en&client=firefox-a&rls=org.mozilla%3Aen-US%3Aofficial&hs=2nq&q=recover+data+from+NTFS+partition&btnG=Search&meta=Most sites allow a "trial" for you to see what you can get back, try each one by one and when you find something that looks to recover what you want, buy it.
However, for future reference, BACKUP! I too have lost a few Terabytes of data in my time, and nothing is more frustrating than "re-ripping" cd's ;)