请问这个视频的背景音乐叫什么？在哪能下？

Tiggy - Why

Nananana nanana
Nananana nanana
Nananana nanana
Nananana nanana

Standing beside you
Wishing you'd always be close to me
And how can I tell you
Every night I see you in my dream
Believe me, don't leave me
I would never let you go
Why, why do this have to be a fantasy
Let's make our love become reality
Oh how I pray for that day to come
When we'll be joined together close as one
Together close as one

I feel the passion
Burning deep inside my soul
And you're the solution
I know you'd catch me if I fall
Believe me, don't leave me
I would never let you go
Why, why do this have to be a fantasy
Let's make our love become reality
Oh how I pray for that day to come
When we'll be joined together close as one
Together close as one
Together close as one
Together cl