קִדְּמ֣וּ שָׁ֭רִים אַחַ֣ר נֹגְנִ֑ים בְּת֥וֹךְ עֲ֝לָמ֗וֹת תּוֹפֵפֽוֹת׃
The singers go before, the minstrels follow after, In the midst of damsels playing upon timbrels.
Mesilat Yesharim
And in the Midrash (Vayikra Rabba 11:9) on the verse (Tehilim 48:15) "He shall lead us in youth" - [filled] with zeal as young maidens, as it is said: "in the midst of maidens playing the timbrels" (Tehilim 68:26) ["in youth" and "young maidens" are related words in Hebrew].
Mesilat Yesharim
The means through which Zeal is acquired are the same ones through which Watchfulness is acquired, and their levels are likewise similar as I wrote earlier.