1) Acts as an informer 2) Acts the informant 3) Acts the stool pigeon 4) Belts or croons 5) Belts out 6) Belts out a tune 7) Belts out Amazing Grace 8) Belts out numbers 9) Campus get-togethers 10) Comes clean 11) Competes on The Voice 12) Confesses tunefully 13) Confesses, gang style 14) Croons 15) Croons tunes 1) Croons 2) Tattles 3) Tells all 4) Warbles 
Spitzer Infrared Nearby Galaxies Survey