Tonight on In It Together, we hear more about how public health officials trace a pandemic. Then, with summer around the corner, we get tips on how to start your own backyard or city garden. Finally, we have a block of musical content for you. We check in WGBH's classical station WCRB on how they're surviving in these times, and host Arun Rath talks with Eric Jackson about some of the great jazz legends who have died recently, some of them from coronavirus.