Charles Ellicott Commentary 1 Chronicles 15:19

"So the singers, Heman, Asaph, and Ethan, [were appointed] with cymbals of brass to sound aloud;" — 1 Chronicles 15:19 (ASV)

The cymbal-players.

Were appointed to sound with cymbals of brass. —Rather, with cymbals of bronze for clashing. Furnished with these instruments, the three chiefs were to lead and accentuate the music.

1 Chronicles 15:19–25 gives the order of the procession as follows:

1. The three master-singers, and two bands of seven each (1 Chronicles 15:19–21).
2. Chenaniah, marshal of the bearers.
3. Two guards of the Ark.
4. Seven priests, with trumpets.