Entertainment LifestyleThe Newtown father-son duo sang a duet version of “Leaving on a Jet Plane” by John Denver,NaturalmethodMay 19, 2022 by NaturalmethodMay 19, 202203177 Singing “Leaving on a Jet Plane,” the father and son duo, Jim Allen and son Sasha who are Newtown natives harmonized their way onto the...