He experimented with drumming at the age of eight, as well as guitar and piano later on.
Casey started playing drums at the age of 3 and guitar at 4.
He began to play piano at the age of 7 and guitar at 13.
Yui works extremely hard to get better at playing guitar, which is shown in later chapters.
Clarke started playing piano at the age of 4 and guitar at 9.
He learned piano at an early age and guitar and sang in his church choir.
Bellamy started playing the piano at the age of 6 and guitar when he was 11.
She learned how to play drums at the age of eleven, and guitar at about fourteen.
If your son has not specified an instrument he would like to learn, you could look together at guitar or keyboard.