Last night the Black Keys stormed David Letterman for an awesome performance of "Tighten Up." See all those people playing instruments in the background? It's a shame, I wish they were still solely using the guitar and drum combo, but this still sounds amazing. If you didn't catch my top 10 May releases, you'll see where their 8-day-old album Brothers took the number one spot. It's a phenomenally strong performance throughout and the first four songs may be the best kick-off to an album in the last 15 years.