Even when KBLX quietly modified its format to Urban AC in the 1990s, the station continued to play jazz music in rotation—and this practice of mixing R&B and jazz songs on radio playlists has occurred on few Urban AC radio stations in some markets. However, KBLX played more R&B songs than jazz; the end result was a gradual phasing out of jazz from its playlist in recent years. From then on, KBLX has evolved into a true Urban AC station today, playing current and old school R&B, as well as uptempo R&B songs to match its competitors. Despite the changes, it still advertises itself as a "Smooth R&B" station, reflecting its ""Quiet Storm"" heritage handle —- although the station did re-integrate jazz vocals into its overall sound after KKSF switched from smooth jazz to classic rock in June 2009. The station has hosted the annual Stone Soul Picnic, which was first held at the Dunsmuir Hellman Historic Estate in Oakland in 1998. It outgrew the location and since 2004, was held at Pioneer Amphitheatre in Hayward before relocating the venue at Sleep Train Pavilion in Concord.