Question
In the Temple, did they blow the shofar or a trumpet?
Answer
Both trumpets (chatzotzros) and horns (shofaros) were used in the Temple. On Rosh Ha-Shanah the shofar was central, but it was accompanied by trumpets; on other occasions, such as fast days, the trumpets were central, but they were accompanied by shofaros (see Mishnah Rosh Ha-Shanah 3:3-4). The same notes (tekiah, teruah) were blown on both.