One of the great things about the Internet is how quickly you can get an answer that would have been almost inconceivably hard to find back in the dark ages. For example, you see a commercial on teevee and think, "Hmmm. That is a pretty catchy song playing in the background there. I wonder if that song was written just for this commercial, or if it's a real song. And if it's a real song, is that the real band you see, just for a second there, at the end?"
Took one (1) search query on YouTube, a glance at the comments for the first video I clicked, one (1) Google, and one (1) click to get to Wikipedia, and I am now happy to tell you that, yes, "The Golden Age" is a song that was recorded in 2009 by The Asteroids Galaxy Tour, a Danish duo ("vocalist Mette Lindberg and producer Lars Iversen") who flesh themselves out to a full band when playing live. They have been around FOREVER. (Since 2008.)
And here is a video that will probably seem more familiar if you have been watching the NBA playoffs the past few weeks:
I am also informed by that Wikipedia page that this song was used as a promotion for a teevee show called Mad Men, which is something that apparently everyone but me has seen, so I apologize if the above is all old hat.
Aside to KK: From the comments of the first version I found on YouTube, WolfataDoor: "The most interesting man in the world's son." So I guess you are more in tune with the zeitgeist than I am.