Alphaville sings the original song :)
No, it was Alphaville: 1984
It was originally sung and recorded by Bob Dylan but the cover by Rod Stewart is the more popular version.
The song is called Forever Young and it is by Jay Z feat. Mr Hudson.
Jay Z
Cher Competes With "10-Year-Old" Christina Aguilera
ET '80s Flashback: The Oscars
How Hollywood’s Hottest Stay Forever Young
Betty White Feeling Young Forever