Kishore Kumar was such an entertainer. However, early in his career, he used to suffer from stage fright. He would kick people out of the studio during recordings. He overcame that eventually. If you look at his live concerts, where he is seen interacting with everyone on and off the stage, it is difficult to imagine a star who would sing on the stage only with is entire body shielded from public view.
Sanjay Gandhi wanted Kishore to sing in a political rally in Mumbai. When Kishore refused, his songs were banned from All India Radio. His income tax troubles also began mysteriously at the same time.
The maestro had to do several public performances to raise money to pay off his income tax debt. He also performed for charities.