KZIZ (1560 AM) is a radio station broadcasting a Smooth Jazz format. Licensed to Sumner, Washington, USA, it serves the Seattle area. The station is currently owned by the Seattle Medium.KZIZ is one of three stations in the Puget Sound region that make up The Z Twins, serving the African-American communities of King and Pierce County, Washington with a diverse R&B, Gospel & Talk format as well as Hispanic programming.KZIZ switched to the Smooth Jazz Network on Thursday, May 24, 2013.