Esa-Pekka Salonen took over the helm of the San Francisco Symphony in 2020 from Michael Tilson Thomas. Both men have had a major impact on symphonic music in California, and Salonen is one of the three guiding figures – with the LA Phil's Gustavo Dudamel and the San Diego Symphony's Rafael Payare – behind the California Festival, a statewide celebration of music that launched in November. James Jolly spoke to Salonen at Davies Symphony Hall in San Francisco following an afternoon concert, as part of the California Festival, in November.