The music you're hearing was written by Bay Area composer Lou Harrison, and is being played by David Tenenbaum. It’s a commission from Other Minds,the contemporary music organization dedicated to encouraging “creative exploration in new music.”
It's part of the first concert in the twentieth "Other Minds Festival," taking place Friday (03.06) at the SFJazz Centeron Franklin Street. There's a panel discussion at 7pm, with the concert at 8pm.