Al,English International is a long time coming.
Concertinas and, is now available from my website,featuring Anglo ,English, Harmonium,Harmonica,voice with concertina accompaniment at http://www.dickmiles.com
interesting that Loius learned from Alf,he has quite a different style,Peggy Seeger also learned from him,different again.
I taught myself song accompaniment,I believe Steve Turner is self taught as well.