Commentary for II Chronicles 5:13

וַיְהִ֣י כְ֠אֶחָד למחצצרים [לַמְחַצְּרִ֨ים] וְלַמְשֹֽׁרֲרִ֜ים לְהַשְׁמִ֣יעַ קוֹל־אֶחָ֗ד לְהַלֵּ֣ל וּלְהֹדוֹת֮ לַיהוָה֒ וּכְהָרִ֣ים ק֠וֹל בַּחֲצֹצְר֨וֹת וּבִמְצִלְתַּ֜יִם וּבִכְלֵ֣י הַשִּׁ֗יר וּבְהַלֵּ֤ל לַיהוָה֙ כִּ֣י ט֔וֹב כִּ֥י לְעוֹלָ֖ם חַסְדּ֑וֹ וְהַבַּ֛יִת מָלֵ֥א עָנָ֖ן בֵּ֥ית יְהוָֽה׃

it came even to pass, when the trumpeters and singers were as one, to make one sound to be heard in praising and thanking the LORD; and when they lifted up their voice with the trumpets and cymbals and instruments of music, and praised the LORD: ‘for He is good, for His mercy endureth for ever’; that then the house was filled with a cloud, even the house of the LORD,

Rashi on II Chronicles