After years and years of searching and trying to remember the name of this show from 1978 I finally stumbled across it on YouTube. The opening music-box music had been stuck in my head since I was 9! Seriously! I remembered it note for note and couldn't believe it when I heard it after 32 years!!
Was a creepy kids show, in 6 parts, about a family who move into and old house with a secret room and a music box tune summons a ghost. There is also a ghost of soldier who haunts the secret room.