I dont know if you are particularly looking for cassette but I found the Chritopher Cross song at
www.karaokecenter.com/software.htm Its a VCD karaoke disc it looks like its in a set though called "Ultimate love song karaoke vcd set" dont know if you wanted that but maybe they sell them seperate ??? I love that song too I remember Luke and Laura on GH with that song I was like 13. Nice song. Anyways... Hope this helps. Kelley