2 Chronicles 35:24-25

24So they took him out of his chariot, put him in his other chariot and brought him to Jerusalem, where he died. He was buried in the tombs of his ancestors, and all Judah and Jerusalem mourned for him.

25Jeremiah composed laments for Josiah, and to this day all the male and female singers commemorate Josiah in the laments. These became a tradition in Israel and are written in the Laments.