Some people say it's a protest song about the commercialisation of Christmas. Others that it's anti-religious. I Believe In Father Christmas is about neither, although lyricist Peter Sinfield concedes that it does include a touch of cynicism but says ultimately it's a song of joy and hope. When Greg Lake co-wrote it in 1975 he had embarked on a solo career away from Emerson Lake & Palmer. Those around him at the time, including songwriter Peter Sinfield and broadcaster Bob Harris, recall how repeating a simple acoustic guitar exercise led Greg Lake to this giant of a song that includes a full choir, orchestra, and an extract from Prokofiev to create an enduring Christmas anthem. For many people it's a comforting song conjuring images of nostalgic picture postcard Christmases of a childhood spent in the ambience of Christmas tree lights and candles with 'eyes full of tinsel and fire'. For others it's a cautionary reminder of the need to look beyond the materialism and commercialism to a quieter, more spiritual time. Producer: Maggie Ayre