Dad-likes-NU ABO O_o?

I discovered-> My dad is addicted of NU ABO song! He is always singing the part of: "Nanananananananananana NU ABO" (he has NU ABO on his mobile phone to listen everywhere!)
Why? Because me and my sister, we always sing this music. And I think that my dad began to like this music in that way.
"This music brings joy!" <- He said that! O_O

I was surprised!