What does 1 Chronicles 15:27 mean?

David, all the Levites carrying the chest, the singers, and Chenaniah the leader of the music were all dressed in fine linen. David also wore a linen vest over his clothes. 1 Chronicles 15:27 - Modern Text Bible

(Everyone involved in bringing the chest wore special clothes, showing respect for the occasion. David, as king, joined in fully, not holding himself above the others.)