What is the fine-grained topic of the following text: Kronos Festival 2019 kicks off with a program that features the Bay Area premiere of Glorious Mahalia, a work by Chicago-based composer Stacy Garrop that celebrates legendary singer Mahalia Jackson through the words and spirit of oral historian and activist Studs Terkel. Only return the topic.
Kronos Festival 2019's premiere of Glorious Mahalia by Stacy Garrop