Well, I fall back on a couple of old demo faves -- Stimela by Hugh Masekela and Spanish Harlem by Rebecca Pidgeon. My go-to standards for male vocal and female vocal.
Stimela by Hugh Masekela
https://www.youtube.com/watch?v=OjPrcRjN0VM
Spanish Harlem by Rebecca Pidgeon
https://www.youtube.com/watch?v=_RMTEWsGGEg
Stimela by Hugh Masekela
https://www.youtube.com/watch?v=OjPrcRjN0VM
Spanish Harlem by Rebecca Pidgeon
https://www.youtube.com/watch?v=_RMTEWsGGEg