"The silence that has hung over the Temple Mount for nearly two thousand years was broken Thursday morning when three Levites ascended Judaism’s holiest site and sang the daily psalm. The moment marks an unprecedented restoration of an ancient Temple service that ceased with the destruction of the Second Temple in 70 CE."
"In the days that the Temples stood in Jerusalem, the Levites sang on the 15 steps— corresponding to the 15 Songs of Ascent in Psalms 15 —that led from the Ezrat Nashim (“Court of Women”) to the Ezrat Yisrael(“Court of Israelites”). The Mishna states that there were never less than 12 Levites standing on the platform, but their number could be increased indefinitely." FULL STORY at above link.