Albert Barnes Commentary 2 Samuel 6:5

"And David and all the house of Israel played before Jehovah with all manner of [instruments made of] fir-wood, and with harps, and with psalteries, and with timbrels, and with castanets, and with cymbals." — 2 Samuel 6:5 (ASV)

Played – That is, to dance to vocal and instrumental music (see the note on Judges 16:25).

Cornets – Instead, based on the etymology of the Hebrew word (meaning “to shake”), their pairing with cymbals, and their translation as “sistra” in the Vulgate, this term likely refers to an instrument with bells or rings that produced a sound when shaken.