Lane's brain

The last Tuesday of every month, Lane has singing time at his school. They learn little songs all month long and then on this particular day, all of the parents are invited to come to the last 15 minutes of class and hear them perform.
Lane usually likes all of the songs and sings them at home but when it comes to this singing time - he refuses to sing. He just sits there.
In order to go, I have to get the little girls ready and drag them into the classroom (which by the way, this preschool has like a drive through service of sorts. I drive right up to Kyle's classroom door and the teacher comes out to get them and take them in. Same for picking up - awesome for a mom that has 2 others that I would have to cart in and out!)
Anyway, its an ordeal to come, especially if its raining. And we live in the Pacific North West. It rains here. I have told Lane that I am not going to come unless he sings the songs, like he does at home. I don't want to go and watch him sit there and stare or shake his head and act embarrassed.
Last month he sang the first two songs then quit and wouldn't go on. So I left the room and waited in the hall. After they were done he came running out to find me and gave me a big hug and told me that next time he would sing.
I decided to give him one more chance.
This last Tuesday, two days ago, was singing time.
He sang one song...sort of.
I left the room again. And when they were done he came running to me and said:
"But I was singing them in my brain! Didn't you know that I was singing them in my brain?!"
Nice try, champ! Silly kid.


**He's such a sensitive little boy and I don't want to make him feel like has to sing or I'll be disappointed in him. Cause that would hurt his little soul. But I also don't want to go through the ordeal of getting there to watch him act embarrassed and uninterested. What to do?**