They performed it on Late Night With Jimmy Fallon, so the One-Trick Pony track has something conceptual to its joyful, horn-lined lilt. Even if Fallon's jokes don't always work, his sound people generally do, and it's not surprising the Roots handle the instrumentation tightly and with swing (hello, summer). For his part, Simon looks fairly stoked (and, as per that thumb, he indeed raises the roof). In order to watch the proceedings, you'll need to click on the Simon thumb over at nbc.com (after watching a commercial), but we'll make things easier by updating with an embed when it's available.