The Boston Pops Orchestra, under the direction of Keith Lockhart, performs a musical video tribute, Summon the Heroes—featuring the work originally composed by John Williams for the 1996 Olympic Games—as a tribute to today’s first responders who are providing critical and needed services during the Covid-19 epidemic. John Williams joins the virtual tribute with a musical and spoken introduction taped from his home studio in Los Angeles. [- Read more on the Boston Pops You Tube Channel]