AC/DC opened for THE DICTATORS and the MICHAEL STANLEY BAND on August 24, 1977, at the Palladium in NYC.
Shortly after the show they crushed uninvited into punk club CBGB, plugged in and hastily played a handful of songs!

Read more about it here:
https://www.salon.com/2017/11/04/the-night-acdc-stormed-cbgb/
https://www.openculture.com/2025/11/ac-dc-plays-a-short-gig-at-cbgb-1977.html
https://www.ac-dc.net/archive/acdc_tour_history.php?date_id=849