Daily Halacha - Rabbi Silverberg - Tekiot before Musaf, and Shemoneh Esrei of Musaf of Rosh HaShana

Shapell's/MRC Virtual Beit Midrash - Un pódcast de Shapell's Rabbeim

Full title: the number of initial Tekiot before Musaf, and the unique content of Shemoneh Esrei of Musaf of Rosh HaShana