My baby is nearly 15 months old and has been doing Little Musician since he was about 8/9 months old. Sometimes we listen to the same lesson twice in one day, sometimes just the once. We have done over 100 lessons and he has a little Fisher Price piano with one octave of keys that he sometimes bangs about on. When should I start to see some sort of impact? Because so far, he doesn't clap, doesn't sing, doesn't react at all to the software. He doesn't resist watching it, but neither does he actively want to. He watches and smiles. I have no idea whether he is understanding the notes, whether he recognises sounds, or even if he recognises the tunes.

What are other people's experiences with their children? And should I be doing something differently?