Scorch keyboard fail?

[Panthau]

Hi,

I just got a piano and have never played before. I thought Avid Scorch would be a good idea to learn notes by playing a melody i like. Therefore i bought Scorch for iPad with the theme from Schindler´s list.

But somehow the keys from the keyboard seem to get stuck. So i dont know which key is currently played and which not. Im not sure if this is a fail from Scorch itself or from the song?

Ive made a video, so you can see what i mean -> http://www.youtube.com/watch?v=0dTCmIvvwwk

Thanks,
Phil