Goodbye’s first song, titled Jaikal Mahakal, was released by film’s makers and cast on Tuesday. In the song Amitabh Bachchan and Rashmika Mandanna, along with their family, bid their final goodbye to Neena Gupta's character. The song Jaikal Mahakal shows Amitabh Bachchan immersing the ashes of his late wife, played by Neena Gupta, as his family, including daughter Rashmika Mandanna …