Daniel Johnston, the influential singer-songwriter and visual artist who painted Austin’s famous “Hi How Are You” frog mural on the Drag, died at home last night following a presumed heart attack at age 58. The news was confirmed by his former manager Jeff Tartakov.

Johnston’s physical health worsened significantly in recent years. Last year, his sister Margy Johnston told the Chronicle that Daniel had recently endured a rough go that included falling, hospitalization,