Cantonese Opera?

[paradroid1793]

As per my usual, I'm late to the party. However, I do own this record personally and my friend's mother from Kwangtung was able to provide some information.
The record was manufactured by a company called "Golden Star", HER mother owned some in the 1930s-1940s range. While the artist's you provided have the same names, she concluded that they are unlikely to be the true artists as the names are common. DisCogs lists both artists as "Unknown", probably because they aren't definitive proof. However, is an Opera, and it is in Cantonese.