Pronunciation
Az yashir Moshe uv'nei Yisrael et hashirah hazot l'Adonai vayom'ru leimor Ashirah l'Adonai ki ga'oh ga'ah, sus v'rochvo ramah vayam. Azi v'zimrat Kah, vay'hi li lishuah Adonai yimloch l'olam va'ed
Meaning
Then Moses and the Children of Israel sang this song to the Lord, and they said: I will sing to the Lord, for He is exalted above the exalted; horse and its rider He hurled into the sea. My strength and song is God, and He has been my salvation The Lord will reign forever and ever
About these words
אָז יָשִׁיר = "Then he WILL sing" — future tense. The Sages see this as a hint to the future resurrection.
The opening declaration of the Song — God's power over the mightiest army on earth.
The closing declaration — God's sovereignty is eternal. This is said standing.