Most people know him as an actor and comedian.But it's no joke that Steve Martin is also a highly respected, Grammy-winning musician and banjo aficionado.And on Saturday, the 74-year-old sought to lift spirits during the coronavirus crisis by sharing a little bluegrass jam via Twitter. 'Banjo balm': Actor and comedian Steve Martin sought to lift spirits during the coronavirus crisis by sharing a little bluegrass jam via Twitter on SaturdayDubbing it 'banjo balm', Martin can be seen in the video clip picking away at the strings of his banjo as he stands in a wood.The Father Of The Bride and LA Story star wore a sweater and a baseball cap as well as sunglasses for his impromptu performance.