First song I heard today

Just a great song. 1st person to respond with the artist wins a no prize.

You say yes, I say no.
You say stop and I say go go go, oh no.
You say goodbye and I say hello
Hello hello
I don't know why you say goodbye, I say hello
Hello hello
I don't know why you say goodbye, I say hello.
I say high, you say low.
You say why and I say I don't know, oh no.
You say goodbye and I say hello(Hello Goodbye Hello Goodbye) hello hello(Hello Goodbye)
I don't know why you say goodbye, I say hello(Hello Goodbye Hello Goodbye) hello hello(Hello Goodbye)
I don't know why you say goodbye(Hello Goodbye) I say goodbye.

Why why why why why why do you say goodbye goodbye, oh no?