《Sunny Day Song》的歌詞如下：
Sunny day, happy day
Sunshine all around
Let's go out and play
And have some fun today
Chorus:
Sunny day song
Sing it with a smile
Sunny day song
Make the world a smile
The birds are singing high
In the sky up above
Come on and let your self go
And have some fun today
Repeat Chorus
這是一首歡快的歌曲，鼓勵孩子們在晴朗的日子裡玩耍，享受陽光和快樂。歌詞簡單易懂，適合孩子們學唱。