Joseph Benson's Commentary of the Old and New Testaments - Exodus 15:20-21
Exodus 15:20-21. Miriam the prophetess So called, either in a general sense, because she was an instructer of other women in the praise and service of God, or in a more special sense, because she had the spirit of prophecy, Numbers 12:2; Micah 6:4. Miriam (or Mary, for it is the same name) now presided in an assembly of the women, who, according to the common usage of those times, with timbrels and dances, sung this song. Moses led the sacred song, and gave it out for the men, and... read more
The Pulpit Commentary - Exodus 15:21
Miriam answered them. Miriam, with her chorus of women, answered the chorus of men, responding at the termination of each stanza or separate part of the ode with the refrain, "Sing ye to the Lord," etc. (See the "Introduction" to this chapter.) While responding, the female chorus both danced and struck their tambourines. This use of dancing in a religious ceremonial, so contrary to Western ideas of decorum, is quite consonant with Oriental practice, both ancient and modern. Other examples... read more