With summer comes festivals, and with festivals comes some great performances. This past weekend, London held its annual Wireless Festival in Queen Elizabeth Olympic Park. This year's line-up included Frank Ocean, Miguel, Big Sean, A$AP Rocky, Kendrick Lamar, A Tribe Called Quest, Snoop Lion, and more.

The main headliners of the event were Justin Timberlake and Jay-Z, who kicked off a tour of their own on the third night of the festival. Check out rock the mic with a fantastic performance of "Holy Grail" above.