Postby singingmum » Mon Jun 30, 2014 2:51 pm
I'm a conductor, singer, voice and piano teacher and firstly would say that it very much depends on the child, also the instrument and the approach taken by the teacher.
The piano is fairly difficult, requires a lot of coordination and physical strength/adequate hand size, so isn't really suitable until age 6/7. However, keyboard and a fun more generalised musical approach can work really well. Something like the recorder (if you can bear the noise) also works well as it's light, small and fairly simple.
Agree re post about Kodaly and Suzuki.
Good beginner classes I know are Funky Monkey Keyboard classes in south London, which are a great introduction the the keyboard, music theory, presented in a fun and accessible way for children from age 4.
Overall, I would recommend something that will engage your child and be fun for them, so that they're not put off music and instruments altogether!