May 12 is a big one on the classical calendar. Spring birthdays for two great French composers, Jules Messenet and Gabriel Faure. It is also the death anniversaries of Belgian violinist Eugène Ysaÿe and Czech composer Bedřich Smetana. Music from all of them coming up in the program We’ll get our daily dose of vitamin B from Friedrich Gulda, hear from the Muungano National Choir of Kenya, and thank Scottish guitarist Paul Galbraith for his superb recital last week at the Lobero.