Complex sentence: On 1 November 2011, GMG Radio launched "Smooth Christmas", a dedicated station playing only Christmas music on the Digital One multiplex, with no news or advertisements but it promoted Smooth Radio and broadcast until 27 December 2011.
Split into simpler sentences: On 1 November 2011, GMG Radio launched "Smooth Christmas" on the Digital One multiplex, a dedicated station playing only Christmas music with no news or advertisements. It promoted Smooth Radio and broadcast until 27 December 2011.