Sivan – Mysterious Sounds of Matan Torah. Speaker: Rabbi Nasan Maimon.
On Erev Shavuos 1798, just before he embarked on the ship that would take him to Eretz Yisrael, Rabbi Nachman described hearing the distant sounds of Matan Torah. Excerpted from Shevachey HaRan 2 – Para. 8. The entire Shiur is HERE.