YouTube just doubled down on their live music video investment by adding over 13,000 new titles to their Music Vault live music video showcase. Including performances from “Bill Graham Presents” and “King Biscuit Flower Hour” courtesy of a deal with Wolfgang’s Vault, there are so many great performances here I almost didn't know where to start. I only just came across this late last night but the selection appears to be broad, rich , and amazing. From single tracks to full concerts, from Muddy Waters to Miles to The Allman Brothers to St. Vincent, there's enough great footage here to ruin a week's worth of work time. Best of all, it's free.