Commentary for I Chronicles 6:17

וַיִּהְי֨וּ מְשָׁרְתִ֜ים לִפְנֵ֨י מִשְׁכַּ֤ן אֹֽהֶל־מוֹעֵד֙ בַּשִּׁ֔יר עַד־בְּנ֧וֹת שְׁלֹמֹ֛ה אֶת־בֵּ֥ית יְהוָ֖ה בִּירוּשָׁלִָ֑ם וַיַּעַמְד֥וּ כְמִשְׁפָּטָ֖ם עַל־עֲבוֹדָתָֽם׃

And they ministered with song before the tabernacle of the tent of meeting, until Solomon had built the house of the LORD in Jerusalem; and they took their station at their service according to their order.

Rashi on I Chronicles