Following are a number of back-translations as well as a sample translation for translators of 2 Chronicles 29:30:

• Kupsabiny: “Hezekiah had earlier together with his leaders told the Levites to praise God through songs that king David and Asaph the one seeing revelations were singing. Then, all the people praised God with happiness and worshipped (him)” (Source: Kupsabiny Back Translation)
• Newari: “The King and his officials ordered the Levites to praise the LORD by singing psalms written by King David and the prophet Asaph. So rejoicing, they sang songs of praise and bowing their heads they worshiped God.” (Source: Newari Back Translation)
• Hiligaynon: “King Hezekia and his officials commanded the Levites to praise the LORD through the songs that King David and Asaf the prophet had-made. So they sang songs of praised with joy while they are-kneeling-down to worship God.” (Source: Hiligaynon Back Translation)
• English: “Then King Hezekiah and his officials commanded the descendants of Levi to praise Yahweh, singing the songs composed/written by David and Asaph the prophet. So they sang songs joyfully and bowed their heads to worship.” (Source: Translation for Translators)