The Origins Of The Songs Of The Passover Seder

Dayenu

“Dayenu” is a Hebrew song, traditionally sung during the celebration of Passover. The word itself essentially means “It would have been enough for us.” Day is the Hebrew word for “enough” and the suffix enu means “our”.
This traditional up-beat Passover song is over one thousand years old. The earliest full text of the song occurs in the first medieval haggadah, which is part of the ninth-century Seder Rav Amram. The song goes through a series of gifts believed granted by G-d to the Israelites (such as Torah or Shabbat), proclaiming that any of them alone would have been sufficient, to express greater appreciation for them as a whole. It is 15 verses long, sequentially recounting each divine intervention in the story of the Exodus.
After each divine act, the chorus “(if G-d had done only this) it would have been enough for us” is sung.

Adir Hu

Adir Hu (Mighty is He) is a hymn naming the virtues of G-d in order of the Hebrew alphabet, expressing hope that G-d will rebuild the Holy Temple speedily.

The tune of Adir Hu tune has undergone several variations over the years, but the origin is from the German minnesinger period. The earliest extant music for Adir Hu is from the 1644 Rittangel Hagada; the second form was in the 1677 Hagada Zevach Pesach;and the third and closest form can be found in the 1769 Selig Hagada. In the 1769 Hagada, the song was also known in German as the Baugesang (the song of the rebuilding of the Temple).
There are 24 short simple lines, each beginning with an attribute of G-d. Most of the virtues of G-d are adjectives (for instance, Holy (Kadosh) is he); however, a few are nouns (for instance, Lord is he). The traditional melody is a bouncy, major one. Other melodies, however, have been composed for the alphabetical song.