Old Waldorf, San Francisco 2nd September 1977 In September 1977 AC/DC were still striving to make some inroads into the US market. Despite their growing status in Europe, the 'Let There Be Rock' tour was only occupying relatively small U.S.venues. However the omens were auspicious. Bassist Cliff Williams had joined the band and some of the material which would later surface on the album 'Powerage' was also being showcased at the time.