Thank you, aeh.
When I did a websearch for soft J, and for hard J, I did not find word pronunciation examples, but the urban dictionary had meanings for these.

The sound of ZH, I get this... as in Beijing.
Others have also shared some interesting pronunciation examples with me:
- Hallelujah
- Elijah
- jalapeno

Taking all this into account, the female artist featured in the OP's linked material would be pronounced like " John - uh "
("Her name rhymes with "Donna," not "Hannah." Hard J.")

Thanks again.