'Style' in the Bible

Zechariah, Aziel, Shemiramoth, Jehiel, Unni, Eliab, Maaseiah, and Benaiah were to play the harps according to the alamoth style;

Mattithiah, Eliphelehu, Mikneiah, Obed-Edom, Jeiel, and Azaziah were to play the lyres according to the sheminith style, as led by the director;