Isaiah 30:32 describes judgment on Assyria accompanied by music — a different tone from the joyful feast here, but same setting.

Isaiah 2:3 describes going up to the mountain of the LORD—the same destination and pilgrimage language as the festal journey in Isaiah 30:29.

In Isaiah 12:1, the people give thanks for God's anger turned away — this matches the song of gladness described here.

In Isaiah 26:1, a song of salvation is sung — similar to the song of gladness after deliverance here.

In Exodus 15:1-21, the song of Moses and Miriam celebrates deliverance from Egypt — a model for the festival night of rejoicing Isaiah describes.

In Deuteronomy 16:6, the Passover sacrifice at evening is the specific holy festival night Isaiah alludes to.

In Psalm 42:4, the psalmist recalls leading a festival procession to God's house with song—mirroring Isaiah's depiction of joyful pilgrimage to the mountain of the LORD.

Psalm 81:1-4 commands festal song and instruments at the new moon feast, echoing Isaiah's holy festival with flute and gladness.

In 2 Chronicles 20:27, Judah returns to Jerusalem with joy after victory — mirroring the joyful pilgrimage to the mountain of the Lord.

Psalm 42:8 speaks of a song at night — echoing the 'songs as in the night' here, but in a personal lament context.

In Matthew 26:30, Jesus and disciples sing a hymn before going to the Mount of Olives—a similar pattern of song followed by ascent to a mountain.

Acts 16:25 shows Paul and Silas singing hymns at midnight — a New Testament parallel to 'songs in the night' from this verse.