I'm not a walking IMDb, honey, but I can tell you that the main stars of "The Concert" in 1974 were Luciano Pavarotti, Montserrat Caballé, and Zubin Mehta. If you're looking for a full cast list, I suggest you hit up Google or watch the movie credits like the rest of us mere mortals.
The cast of Francis Howerd in Concert - 1974 includes: Barry Cryer as Himself - Announcer Julie Ege as Herself - Guest Frankie Howerd as himself John Le Mesurier as himself Kenny Lynch as himself
The cast of Him - 1974 includes: Tava as Jesus Christ
The cast of Hogishim - 1974 includes: Hie Bang
The cast of Mushuku - 1974 includes: Ken Takakura
The cast of Toji - 1974 includes: Hie So
The cast of Francis Howerd in Concert - 1974 includes: Barry Cryer as Himself - Announcer Julie Ege as Herself - Guest Frankie Howerd as himself John Le Mesurier as himself Kenny Lynch as himself
The cast of Hangang - 1974 includes: Am Park
The cast of Him - 1974 includes: Tava as Jesus Christ
The cast of Panathukkaga - 1974 includes: Jayachitra
The cast of Thulabharam - 1974 includes: Sharada
The cast of Harathi - 1974 includes: Sharada
The cast of Hogishim - 1974 includes: Hie Bang
The cast of Stinkybutt - 1974 includes: Sheri Millbradt
The cast of Kundoktora - 1974 includes: Vilma Santos
The cast of Hymn to Her - 1974 includes: Jane Brakhage
The cast of Fascista - 1974 includes: Benito Mussolini
The cast of Uttarayanam - 1974 includes: Adoor Bhasi