Related Clues:

• Start to croon nothings?
• Bill's companion? Goodness me!
• Goodness? Chef's squeezed out the last bit
• Call of a dove
• Softly speak one reason for global warming?
• Sound made by dove getting crumbs
• Sound sophisticated, almost
• Bill's companion shows surprised expression
• Sound coming from dovecote, well I never!
• Speak fondly as constant pair?
• Murmur, speak softly
• Murmur softly
• Bill's partner mostly unenthusiastic
• I'm surprised small business has come to nought
• Sound from a window ledge