For the next pair of Buffalo Philharmonic concerts this Saturday evening at 8pm and Sunday afternoon at 2:30pm, BPO music director JoAnn Falletta returns to the podium to conduct a program that local classical music lovers of the symphonic vocal repertoire will not want to miss. Heidi Grant Murphy will be the featured soprano in the final, angelically inspired movement of Gustav Mahler’s Symphony No. 4. She will also sing Knoxville: Summer of 1915, American composer Samuel Barber’s exquisitely evocative invocation of the world of his own childhood, a world that has receded even further into the misty realms of the past since its 1947 debut. Barber set the text of the 1938 short prose poem by his exact contemporary, the future Pulitzer Prize winner James Agee, and like Mahler’s symphony the work manages to magically capture the world of a child. Read more.