our 6.5 yr old incessant humming/singing

Is there a disorder or sesory issue or something if your child has hummed and sings incessantly all the time without stopping - even in the midst of being told not to?  He's always been musical and loves music - ever since birth but his singing is driving us a bit batty.  Do all 61/2 yr olds do this?
It's usually a very short part of a song that gets repeated not the whole song.

[LRM1021]

If your child does this while at school or at church or other places where it is distracting and he cannot control himself then I would talk to his pediatrician about it. Not all children are making noise constantly.
Children as they grow up learn to internalize speech. Some children are more delayed about internalizing speech/ sound than others.  The things they think in their head will come out of their mouths-- they have to learn to keep them in, so to speak. My son talks constantly ( and I mean CONSTANTLY--- I'm not kidding about that) -- we are working on internalizing speech with him as well. Its a skill he is just learning.
Now, if your child is able to control this while at school, or church, or other places where it is inappropriate, then honestly I would not even worry about it. I would, however, try offering him rewards for "keeping it in his head" and see if that can encourage him to tone it down a bit.

[L3333]

Thanks for your response!  You worded your post really well and it was encouraging to realize he doesn't do this at school and/or church.  Thanks for giving me perspective.  I also think that teaching him to keep it in is a great idea and a good way to appropriately teach him what the difference is.  He's old enough to understand and concrete enough to have us role play and stuff.  Great suggestion.
Thanks again...

[LRM1021]

Awesome to hear that school and other social settings are not a problem for him! He'll pick up on the lessons in no time I am sure!

[RockRose]

Does your son do this at school,  or just at home?

If it's just at home,  this is really quite common,  and associated with mild OCD.  You see people saying "OH DANG IT,  now I'll sing that song all day!!"  And they mean it.  There are certain songs that are more common for compulsive singing,  and I won't list them here or I'll be singing them.

[RockRose]

Oops,  sorry.  I should have read the whole thread.  If he doesn't do it at church or school,  he's fine.  

[L3333]

Thanks again to you both for posting a comment - I appreciate both of them!
I've volunteered in his class at school todayand noticed that he didn't do it but that some other kids were off and on humming/singing even while the teacher was giving instructions.  So I think you are all correct in saying that it's probably fine.  
LRM1021...My husband is a school teacher and is going to use your advice and wording to his student's parents at conference time regarding teaching their children at home the difference between internaized speech and outloud speech.  Thanks again for your advice!

[LRM1021]

Please make sure to give credit to Russell Barkley, PHD about the whole internalized speech thing-- would not want anyone to get upset! I read about it in one of his books. The words above are mine, but the idea about children learning how to internalize speech I think is his.