Excerpt from Frank Scheffer's documentary "Frank Zappa, A Pioneer Of The Future Of Music" as broadcast by VPRO's "Het uur van de Wolf" in the Netherlands, April 22, 2007. Dutch hard subbed (sorry).

Vai reminisces about the first parts of what would become "What's new in Baltimore", & the Zappa live part is not the "sound check" Vai refers to (as far as I know there's no video), but "Black Napkins" from one of the Zoot Allure concerts in NY.

Full docu in the links, & if the links don't work, lemme know please.. I can send.

https://drive.google.com/file/d/1ejfF...
https://drive.google.com/file/d/1TvWp...