DD aged 7 is about to do grade 2 violin. She has been learning for 18 months. She seems pretty keen on music. She is doing a children's orchestra on Saturdays and a choir and another orchestra (if you can call it that....) at school. Assuming she passes the exam as her teacher expects I thought it might be a good time to start piano. She is however keen on singing lessons which would be through the school. She sings well and in tune.
I guess i just feel it takes years to learn to play the piano well so it isn't something that is easy to pick up later on. I think she is quite keen on playing the piano but isn't so keen on the idea of practising two instruments.
She has non musical hobbies too and time and money aren't limitless.