Related Clues:

• Make a joyful noise
• Turn state's evidence
• Be an informer
• Cooperate with the feds, say
• Produce strains
• Tell Mom
• Turn on Tony Soprano?
• Name names
• Squeal to the cops
• Be a snitch
• Divulge a secret
• Doubled, a pen
• Community hootenanny
• Act the fink
• Blab freely