Alembert was much interested in music both as a science and as an art, and wrote Elements de musique theorique et pratique (1779), which was based upon the system of P. Rameau with important modifications and differences.
Mademoiselle Bourienne took from her reticule a proclamation (not printed on ordinary Russian paper) of General Rameau's, telling people not to leave their homes and that the French authorities would afford them proper protection.
That I, the daughter of Prince Nicholas Bolkonski, asked General Rameau for protection and accepted his favor!