Where else can you hear the world’s best collection of “dad” jokes, a Chinese zither, known as a guzheng, a ukulele solo, guitar and piano, and an act that some call better than the von Trapp family performers? At Friday’s Open Mic, introduced by Horst Simon. It starts at 4:30. Be there. https://calendar.google.com/event?action=TEMPLATE&tmeid=NmNpdm5yNWt0bHRvcmsxdnUzdjRwb2IwNm8gbGJsLmdvdl80czRycmcxMmw2ZXFnNm5jbWMya3QwdmNnZ0Bn&tmsrc=lbl.gov_4s4rrg12l6eqg6ncmc2kt0vcgg%40group.calendar.google.com