Mommy singing nursery rhymes, Richie trying to follow with signing

There are 4 songs that Mommy sings and Richie's trying to follow with signing
1. Ba Ba Black sheeps
Richie's just moving his body and clapping when mommy said the little boy in the end of the song
2. Twinkle twinkle little starts
Even though he could open and close his hand when mommy said twinkle twinkle, sometimes he just doesn't want to do it hehe...but he could say are....when mommy end the song "..how I wonder what you are"
Btw, this is one of his lullaby song, that's why he's familiar with this song
3. Itsy Bitsy Spider
When mommy said itsy bitsy spider, his hand is placed in his head, 'cos mommy likes to show him how spider climbing up into his body until head haha...
then when mommy said down came the rain and washed the spider out, he will put the hand like wiper, meaning washed the spider out
mommy said out came the sun and dry up all the rain, his hand will open and up (but not so clear)
the last one, repeat again itsy bitsy spider went out the spout again, he will put his hand on his head again hehe...
4. Head shoulder knees toes
He managed to point knees, eyes, ears, mouth, nose (sometimes he can point head depends on his mood)

Enjoy the clip then hehe !