John Braham was a tenor

Tenor

The tenor is a type of male singing voice and is the highest male voice within the modal register. The typical tenor voice lies between C3, the C one octave below middle C, to the A above middle C in choral music, and up to high C in solo work. The low extreme for tenors is roughly B2...

 opera

Opera

Opera is an art form in which singers and musicians perform a dramatic work combining text and musical score, usually in a theatrical setting. Opera incorporates many of the elements of spoken theatre, such as acting, scenery, and costumes and sometimes includes dance...

 singer born in London, England. His long career led him to become one of Europe's leading opera stars. He also wrote a number of songs, of minor importance, although The Death of Nelson is still remembered. His success, and that of his offspring in marrying into the British aristocracy

Aristocracy

Aristocracy , is a form of government in which a few elite citizens rule. The term derives from the Greek aristokratia, meaning "rule of the best". In origin in Ancient Greece, it was conceived of as rule by the best qualified citizens, and contrasted with monarchy...

, are also notable examples of Jewish social mobility in the early 19th century.
Braham’s precise origins are uncertain.