If Pasuk 6 ends the introduction to the Shirah, what is the gist of the remaining five Parshiros until Shevi'i?
Seforno: The rest of the Shirah 1 is divided into five parts
Seforno: Following the introduction which teaches us Hashem's Righteousness - that He is reliable to reward those who do good and when He punishes the Resha'im, He does so without a trace of injustice.
Seforno: As He will do once again at the end of days with those who remain.
This summary of the first six Parshiyos of 'Ha'azinu' is known as 'Haziv Lach' - which is the acronym of first letters of those six Parshiyos.
What is the meaning of "Z'chor Y'mos Olam"?
Rashi: 'Remember the early generations who angered Hashem'.
Ramban (on Pasuk 7, according to the Ibn Ezra): 'Remember the good that Hashem did with you during the six days of the creation.
Rashbam: 'Remember how, before you were even born, Hashem already prepared (the land of) your inheritance'.
Seforno: Refer to 32:7:1:1*. 'Remember Hashem's ways of goodness, His plans for mankind in general - when right at the beginning, He placed Adam ha'Rishon in Gan Eden - but he sinned'.
Da'as Zekenim, Hadar Zekenim, Rosh: Remember the good that Hashem did for Yisrael.
What is the meaning of "Binu Sh'nos Dor va'Dor"?
Rashi #1: 'Reflect upon the generations of Enosh, whom Hashem swamped with the water of the oceans, and the generation of the Flood'.
Rashi #2: You did not take note of the past; at least take note of the future - that Hashem has the ability to inherit to you the days of Mashi'ach and Olam ha'Ba.
Seforno: 'Reflect also how Hashem did good to the subsequent generations until the Dor ha'Mabul, and to the generations from the Mabul and the Haflagah - and how they too, sinned.
Hadar Zekenim: Before Yisrael were in the world, Hashem prepared for them a place (Da'as Zekenim, Rosh - in every generation).
Who are your fathers and elders?
Ramban: Both hint at people who understand the past and can tell you about them.
Targum Yonasan: 'Read the Seifer Torah and Sifrei ha'Nevi'im and they will tell you'.