You know how President Barack Obama sang a snippet of Al Green's "Let's Stay Together" at a fundraiser at the Apollo Theater in Harlem last week? Well, Green's sure to remember it, because his 1972 hit saw a whopping 490 percent increase in sales.

According to Billboard, it moved 16,000 downloads in the week ending Jan. 22. That amount makes for the classic R&B/soul anthem's best one-week sales since Nielsen SoundScan started tracking downloads in 2003.

[via Billboard]