A Dictionary of Music and Musicians (1900)
“ In the royal letters patent granted to the Abbé Perrin, the first director of the French Opera, or 'Académie Royale de Musique' as from the beginning it was called, free permission was given to 'all gentlemen and ladies wishing to sing in the said pieces and representations of our royal academy without being considered for that reason to derogate from their titles of nobility, or from their privileges, rights, and immunities.' The right to sing seems to have been interpreted as including the right to dance ”
