That IS very cool, IMHO. ('Course, it helps that I was/am a Dio fan.)
I seen the same thing (hologram of RJD), was done for Wacken Open Air 2016.
Not sure if it was the same band, though.
Which begs the question....What's the name of the band in this video?
I am assuming that the hologram is footage taken from a concert, circa '84 to '88 (based on the amount of RJD's hair, and his appearance).
The LP ("The Last In Line") that the song was released on, came out in 1984. (For those who don't know.)
I used to own those first 5 Dio LPs...from "Holy Diver" (1983), to "Dream Evil" (1987).