The musicians Heman, Asaph, and Ethan were to sound the bronze cymbals.
Preparation is here made for the bringing of the ark home to the city of David from the house of Obed-edom. It is here owned that in the former attempt, though it was a very good work and in it they sought God, yet they sought him, not after the due order, Ch1 15:13.
Commenting on 1 Chronicles 15:1-24
So the singers, Heman, Asaph, and Ethan,.... The three principal of them: these were appointed to sound with cymbals of brass; for as there were three sorts of musical instruments, Ch1 15:16 these three chief singers had one of those instruments appropriated to them, one of which were the cymbals of brass, to which the apostle alludes, Co1 13:1.
1Ch 15:19-21 These singers formed three choirs, according to the instruments they played. Heman, Asaph, and Ethan played brazen cymbals להשׁמיע (1Ch 15:19); Benaiah and the seven who follow played nablia (psalteria) עלמות על (1Ch 15:20); while the last six played lutes (harps) לנצּח השּׁמינית על (1Ch 15:21).
Commenting on 1 Chronicles 15:19-21