John Gill 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)

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, (1 Chronicles 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, (1 Corinthians 13:1) .