Obama smile
U.S. President Barack Obama speaks during a campaign event at the Apollo Theatre in New York on Jan. 19, 2012. Obama famously sung a part of an Al Green song at this event. - 

This final note today. Ending where we started, with President Obama. Last Thursday he was in New York for a fundraiser at the Apollo Theater -- you might have heard about this -- and sang a line from Al Green's 1972 hit, "Let's Stay Together."

I don't know how much money he raised, but he did fine by Al Green. Sales of the single were up almost 500 percent this week. That's according to Billboard magazine.

Here you go.

Follow Kai Ryssdal at @kairyssdal