In early March, 35 people gathered on the first floor of a two-story house in Tokyo to listen to the British keyboard player Morgan Fisher reminisce about his days with 1970s rock act Mott the Hoople. This month, Fisher is joining a reunion of the band for brief tours of the U.S. and U.K. Since 1985 he has lived in Japan, and occasionally puts on "salon" concerts in the former piano instruction studio where he keeps a collection of keyboards of various vintage, a video projection setup and folding chairs.