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Behold! I looked and my eyes did see a beautiful city, great and mighty, with myriads of angels surrounding it like a halo, singing glorious sounds of music.
Hebrews 12
22 But ye are come unto mount Sion, and unto the city of the living God, the heavenly Jerusalem, and to an innumerable company of angels,
23 To the general assembly and church of the firstborn, which are written in heaven, and to God the Judge of all, and to the spirits of just men made perfect,

Their voices were like unto violins, so pure were they, a sound so wonderful that my heart leaped with joy within me.
Every angel's voice did sing a different part; yet all their voices, as they sang together, were in perfect harmony.
No earthly choir I have ever heard even comes remotely close to the glorious music of the angels as they sang.
Psalm 148
1 Praise ye the LORD. Praise ye the LORD from the heavens: praise him in the heights.
2 Praise ye him, all his angels: praise ye him, all his hosts.
3 Praise ye him, sun and moon: praise him, all ye stars of light.

Their voices did enhance the sparkling beauty of the city that shone with multiple colors shining like brilliant flames of fire.
To look upon that city was awesome and when I realized it was going to be my eternal home; tears of joy filled my eyes and I began to sing with those angels.
Revelation 21
10 And he carried me away in the spirit to a great and high mountain, and shewed me that great city, the holy Jerusalem, descending out of heaven from God,
11 Having the glory of God: and her light was like unto a stone most precious, even like a jasper stone, clear as crystal;
12 And had a wall great and high, and had twelve gates, and at the gates twelve angels, and names written thereon, which are the names of the twelve tribes of the children of Israel:
13 On the east three gates; on the north three gates; on the south three gates; and on the west three gates.
14 And the wall of the city had twelve foundations, and in them the names of the twelve apostles of the Lamb.