What does 2 Chronicles 29:14 mean?

From the group of Levites, there were Heman’s sons: Jehiel and Shimei. From Jeduthun’s family, there were Shemaiah and Uzziel. And from Asaph’s family, there were Zechariah and Mattaniah. 2 Chronicles 29:14 - Modern Text Bible

(This verse lists the Levites who stepped up to help with the temple work. Each name represents a family line responsible for music and worship.)