Revelation 5:9-10

Then they sang a new song: "You deserve to take the book and break its seals, because you have been slaughtered, and with your blood have bought men from every tribe, tongue, people, and nation,

Revelation 14:3

They were singing a new song before the throne, the four living creatures, and the elders, and no one could learn the song except the hundred and forty-four thousand who had been redeemed from the earth.

Treasury of Scripture Knowledge

Summary

I will sing a new song unto thee, O God: upon a psaltery and an instrument of ten strings will I sing praises unto thee.

Bible References

Sing a new

Revelation 5:9
Then they sang a new song: "You deserve to take the book and break its seals, because you have been slaughtered, and with your blood have bought men from every tribe, tongue, people, and nation,
Revelation 14:3
They were singing a new song before the throne, the four living creatures, and the elders, and no one could learn the song except the hundred and forty-four thousand who had been redeemed from the earth.