is it the same,when you speak to animals(dog,cat etc) and children? when you are singing, you change into a different frequency-area and you are "distracted" by the rhythm, you have to follow. so your doc is right.... do you play any instruments? if not,try it... this is also one of the main-tricks used in these expensive "get rid of stuttering in 5 minutes/days/weeks" "therapies".you are learning either an unnatural speaking-rhythm or you are trained to maintain a unaccented speaking-flow,that will send your conversation partners to sleep or make them wanna punch you... this works as long as you are masochistic enough to maintain this unnatural way of robo-talk in front of other people.... ask your doc about this and try it: http://en.wikipedia.org/wiki/Stuttering_therapy#Stuttering_modification it changed my (really bad) stuttering completely and it`s barely recognizable today/ cheers