Vijay Iyer (center), with Tyshawn Sorey and Linda May Han Oh. The trio carried the momentum of a late 2019 performance in Cambridge into the recording studio for "Uneasy."Craig Marsden On Dec. 4, 2019, the jazz pianist Vijay Iyer took the stage at the Harvard Square club Oberon. Iyer is a musician for whom art and politics always stand in a harmonious, productive tension, something that was especially true during the Trump presidency. That night in Cambridge he joked that it was âmy favorite season â impeachment season.â He then gave Boston its first opportunity to hear a recen...