changing multiple file names

hey all, without making a long story, i have to re-name hundreds of file names. They're all music files (i need to get rid of the "Artist" in a"Artist - Song Title" file name.) So basically instead of having a folder that is:

Artist - Song Title One
Artist - Song Title Two
Artist - Song Title Three

..I need to make it just Song Title. This is rather annoying to right click, rename, and delete the part for hundreds of songs. Any programs or idea's to make this painstaking process easier? :)