Watch Bob Dylan and Billy Strings surprise fans with a performance of "All Along the Watchtower" during a recent show in Spokane, Washington.

When the Outlaw Music Festival touched in Spokane, Washington, Bob Dylan brought out Billy Strings to perform 'All Along The ...

In 2005, two Chicago titans made a generational classic and then sprinted in opposite directions, each daring the rest of hip-hop to follow them.