The Word commands that we forsake not the assembling of ourselves together.

Hebrews 10:23-25 ( KJV ) Let us hold fast the profession of our faith without wavering; (for he is faithful that promised;) And let us consider one another to provoke unto love and to good works: Not forsaking the assembling of ourselves together, as the manner of some is; but exhorting one another: and so much the more, as ye see the day approaching.

The church choir is ministering melodies to the heart of the congregation