Dylan promoted his upcoming album with radio appearances and concert performances. In May 1963, Dylan performed with Joan Baez at the Monterey Folk Festival, where she joined him on stage for a duet of a new Dylan song, "With God on Our Side". Baez was at the pinnacle of her fame, having appeared on the cover of "Time" magazine the previous November. The performance not only gave Dylan and his songs a new prominence, it also marked the beginning of a romantic relationship between Baez and Dylan, the start of what Dylan biographer Sounes termed "one of the most celebrated love affairs of the decade".