请教大侠这段视频里的一小段音乐的名字

Nick Vijicic --教会我勇敢~看完之后明白什么叫"永不言弃" http://v.youku.com/v_show/id_XNTg0MDMxNjA=.html
这段视频4分35秒时响起的背景音乐是什么名字啊? 感觉很好听,就是不知道名字,想请教下 各位大侠 有知道的告诉小弟下啊~? 悬赏100分!
你说的这段是4分43秒时的音乐,我知道,但是4分35秒和4分43秒之间还有一段呢?时间很短,只唱了两句的,我想知道这段音乐的名称~~~

Don't Worry Be Happy
歌手： Bobby McFerrin

完整歌词是：
Here's a little song I wrote
You might want to sing it note-for-note
Don't worry, be happy
In every life we have some trouble
But when you worry, you make it double
Don't worry, be happy Don't worry, be happy now

Ooo-oo-hoo-hoo-oo hoo-hoo-oo-oo-oo-oo-ooo Don't worry
Woo-oo-woo-oo-woo-oo-ooo Be happy
Woo-oo-oo-oo-ooo Don't worry, be happy

Ooo-oo-hoo-hoo-oo hoo-hoo-oo-oo-oo-oo-ooo Don't worry
Woo-oo-woo-oo-oo-oo-ooo Be happy
Woo-oo-woo-oo-ooo Don't worry, be happy

Ain't got no place to lay your head
Somebody came and took your bed
Don't worry, be happy
The landlord say your rent is late
He may have to litigate
Don't worry, (ha-ha ha-ha ha-ha) be happy (look at me, I'm happy)

Ooo-oo-hoo-hoo-oo oo-oo-oo-oo-oo-oo-ooo Don't worry