The earlier the kids are introduce to a second language, the easier and faster for them to learn it. Children are very good mimics. They can easily imitate the sound they hear, and then later you can teach them the meaning of the sound, which may then progress or develop to words and phrases. I wish I had the opportunity to learn a third language when I was younger. Right now, I am a little too busy with so many things that I am having a hard time setting time for my wish to learn a third language.