请大家看看这条歌词是哪首歌里面的？

你说的歌曲是Darin-be what you wanna
里面就有你要的这句歌词！
前面是小男孩唱的后面是大人唱的

http://www.cnjjg.com/music/be%20what%20you%20wanna%20be.mp3

doctor, actor, lawyer or a singer
why not president, be a dreamer
you can be just the one you wanna be
police man, fire fighter or a post man
why not something like your old man
you can be just the one you wanna be
why not president, be a dreamer
you can be just the one you wanna be
i know that we all got one thing
that we all share together
we got that one nice dream
we live for
you never know what life could bring
coz nothing last for ever
just hold on to the team
you play for
i know you could reach the top
make sure that you won't stop
be the one that you wanna be
now sing this with me
doctor, a