Georges Guétary

Georges Guétary, born Lambros Worloou (February 8, 1915 – September 13, 1997) was a French singer, dancer, cabaret performer and film actor, best known his role in the 1951 musical An American in Paris. Description above from the Wikipedia article Georges Guétary, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Cast

An American in Paris
Henri Baurel

Monsieur Hector
Danseur tyrolien (uncredited)

The Lost Woman
Singer at the party

The Inevitable Mr. Dubois
(voice) (uncredited)

Thirty and Forty
Count Mario de Miranda

Feather in the Wind
Claude Magazelle

Love and Companionship
Claude Andrieux

Paris Still Sings!
Self

A Night in the Balearics
Miguel de Santa Floris

Baron Tzigane
Sandor Barinkay

A Girl on the Road
Carlo Cortez / Jacques Gary

Liebe ist ja nur ein Märchen
Mario, Sänger

The Black Rider
Lord Ramon de Ortila

Loves of Casanova
Chevalier Giacomo Casanova de Seingalt

That's Entertainment, Part II
(archive footage)
The Three from the Filling Station
Pierre

Jo la Romance
Georges Hyverlin