Find Vocal Sounds

Decades ago, when I was still using Windows, I recorded a cute little track with a MIDI vocal sound as the lead instrument. It was a "Doo" sound like this; [login to view URL] Since the time I recorded it, I've moved to Windows and 25 years have elapsed. I've lost the sound module that provided the vocals. Everything I have now just gives me oohs and aahs. I'm looking for something like the setup shown in the attachment, but way cheaper. The RealVox Ladies are $200. What ever I get must work on a Mac with Cubase.