Any year but this, Take Me To the World: A Sondheim 90th Birthday Celebration would have lit up Carnegie Hall, Radio City, or one of the grandest Broadway palaces. But no, in our work-at-home, touch-me-not Age of the Coronavirus, the show unfolded in cyberspace. There it will remain in perpetuity, available to stream free on demand. Clocking in at a trim two-and-a-half hours, Take Me to the World showcases three-dozen Sondheim aficionados in a grab bag of signature favorites and bombshell bonbons. By all means, stick around for the exit music, the survival anthem “I’m Still Here,” from Follies, as interpreted by the 11-year-old Iain Armitage, fresh as paint, and some 50 multigenerational Broadway babies representing the gamut of current musicals shuttered by the pandemic. —M.G.