Back Door seems to have been responsible for just one single: it was by Dave Oberlé and it featured 'Beatle Days' and 'Raw Planet', both of which were taken from a musical called 'Henge'. Its catalogue / matrix number was SBR-2, which invites the questions 'Was there an SBR-1?' and 'If there was, what was it?'. Producer and co-writer Tim Sebastion was a prominent Druid, while Dave Oberle was a member of Gryphon; a couple of other members of that band played on the single, so there was quite a strong connection. Thanks to Robert Lyons For The Info.