I Chronicles 15:21 Midrash

וּמַתִּתְיָ֣הוּ וֶאֱלִֽיפְלֵ֗הוּ וּמִקְנֵיָ֙הוּ֙ וְעֹבֵ֣ד אֱדֹ֔ם וִֽיעִיאֵ֖ל וַעֲזַזְיָ֑הוּ בְּכִנֹּר֥וֹת עַל־הַשְּׁמִינִ֖ית לְנַצֵּֽחַ׃

and Mattithiah, and Eliphalehu, and Mikneiahu, and Obed-edom, and Jeiel, and Azaziah, with harps on the Sheminith, to lead.

Read midrashic interpretation of I Chronicles 15:21: and classical rabbinic exegesis.