My ds1 7yo (Angelman Syndrome, no speech) was sat on my knee earlier and put his head near me and said "Mmmmmm"! He has never done it like this before-he has days when he vocalises all day.(the same noise constantly) but most of the time he is quiet apart from excited shrieks of joy or crying. He hasn't said it today (at home anyway) except this once. I think it was 'mum' but I dont feel happy-just sad and very emotional! I want to be happy about it and 'live in the moment'but its not working. If it was your ds would you think it was 'mum'??