Thanks guys for the many replies. I have checked out some Steely Dan as well as yall guys’ work (Tom and Wim). Looks like I’ll have to experiment around some and do something creative instead of just straight thirds. Once I get things rolling I will post a link here to my thread in the Made With Cubase section.
Right now I have a pop song and have the vocalist singing the whole thing and then my voice coming in at the choruses since I didn’t sound too bad there. Maybe I should make my voice into harmonies, or build them beforehand and re-sing them later?