Mysuru: Vidu. Uma Kumar, a Switzerland-based performing artiste, will be presenting a Karnatak vocal concert at the heritage house of Mysore Vasudevacharya, near Agrahara in city on June 15. She will be accompanied by Vidu. Aditi Krishnaprakash on violin, Vid. Tumkur Ravishankar on mridanga and Vid. Sharat Koushik on ghata. The concert, starting at 10.30…