The Pianist, Invisible

In the following message the name of a composer and one of his most popular compositions were transmitted to us by the Ouija Medium in a numerologic code.

Give us the name of the composer and of his composition:

In this most haunted house of Bruges-la-Morte we’re looking for, one can hear IIIII14II 1112IIIII14II 14I382013V19III11, one of the most popular compositions of 23O1267I147 I13I4IO19 13O26I1819. Children from all around climb each other’s shoulders to catch a glimpse of the grand piano that was left in the house by the last occupants. The lid is always open, a piano stool in place. And every night, this wonderful music is sounding through the street...

At midnight, the house is completely deserted. In each of the rooms, it’s pitch black, apart from the room in which the grand piano plays the same wonderful melody, night after night, caught in a web of white light…

What are you saying? That you can’t see the piano player? But nevertheless, the keys of the instrument are touched by invisible fingers! And look… A beautiful young Venetian Lady dances to the tunes straight through the front wall of the mystery mansion we are looking for. And she disappears into the night fog...

Do you see it? And can you hear now the rattling of carriage wheels on the shiny cobblestones in the street?
 
A magnificent coach appears from around the corner. It is pulled by two pitch black horses and the coachman is a sinister looking man – dark, old and sombre. He hesitates for a moment, then whips the horses and…

If you ever feel the need to follow this coach and coachman, you should remember that every night they disappear through the impenetrable black mirror of the Lake of Love…