Analysis of information sources in references of the Wikipedia article "Jussi Björling" in English language version.
Jussi Bjoerling, called the "Swedish Caruso," is only 27, sang in U.S. music halls at the age of 10.
Jussi Bjoerling, called the "Swedish Caruso," is only 27, sang in U.S. music halls at the age of 10.