演唱：白瑞依
儿歌多多
每当我开心的时候
我就想快乐唱起歌
啦啦啦啦啦
我就要快乐唱着歌
开心开心开心
开心开心开心开心
开心开心开心开心开心
开心开心开心开心
啦啦啦啦啦啦
啦啦啦啦啦啦啦啦
啦啦啦啦啦啦啦啦啦啦
啦啦啦啦啦啦啦啦
（让我们开心尖叫）
开心开心开心
开心开心开心开心
开心开心开心开心开心
开心开心开心开心
啦啦啦啦啦啦
啦啦啦啦啦啦啦啦
啦啦啦啦啦啦啦啦啦啦
啦啦啦啦啦啦啦啦
（让我们开心低吼）
开心开心开心
开心开心开心开心
开心开心开心开心开心
开心开心开心开心
啦啦啦啦啦啦
啦啦啦啦啦啦啦啦
啦啦啦啦啦啦啦啦啦啦
啦啦啦啦啦啦啦啦
（让我们加快速度吧）
开心开心开心
开心开心开心开心
开心开心开心开心开心
开心开心开心开心
啦啦啦啦啦啦
啦啦啦啦啦啦啦啦
啦啦啦啦啦啦啦啦啦啦
啦啦啦啦啦啦啦啦
啦啦啦啦啦啦啦啦