Disklavier

Hi

I was wondering if anyone knows where we can get some smartkey music from -
is it available on the web? from Yamaha directly?

Our 3 year-old daughter loves the smartkey demo that came with our
disklavier, but its only about 4 bars long...we're keen to encourage her to
love the piano, so we were wondering where we could get more?

Thanks
Clare (and budding pianist Emily!)