Possible Clues:

• Is a farewell able to be sung? (7)
• Able to bid one farewell with song
• Vocal setting of a text (often religious)
• Bach named one for coffee
• Able to bid farewell in song
• In advance, record so long a piece of music
• Peculiar talk at a choral work
• Preserve so long a piece of music
• Is an expression of gratitude not able to be sung?
• Bach's "Coffee --"