From visityork.org/media/factsheets/haunted.asp:

Haunted Pubs

The Black Swan – Peaseholme Green

Renowned for its live entertainment, this beautifully timbered 15th century pub is one of the oldest in the city. Folk music is a speciality and they host regular beer festivals. One of the regular visitations is by a beautiful young woman in a long white dress, who stares distractedly into the fireplace. There is also a man, who by the cut of his clothes and his bowler hat, belongs to Victorian times. He appears to be waiting impatiently for someone…but gradually fades away. Tel: 01904 686911

Perhaps they're waiting for the music to start??

There's nothing about prices or contact details on the programme, stallion, nor whereabouts Peaseholme Green is (for we unfortunates who don't live close enough to York to know it better).