Mostly Kosher | Russell Hill Rogers Musical Evenings at San Fernando Cathedral Register for a free ticket now to enter into the concert raffle! Mostly Kosher radically reconstructs Judaic and American cultural music through ravenous klezmer beats and arresting Yiddish refrains. The group has also been a fixture of California stages and the community, performing and educating with the Urban Voices Project, Jewish Youth Orchestra in San Gabriel Valley, and various underserved communities. Mostly Kosher have released two albums thus far, the latest in 2022 titled “This World is Yours” that sources elements from the biblical Songs of Solomon and Ladino folk songs, among others.