The following snippets appear in the Ibbs and Tillett brochure:

Some longer extracts:

ELIJAH

                         Jersey Festival                                                             Crewe                                                                          Harrogate                                                                          Ripley

                                 Malvern                                                                                                                                                                                                         Worcester

MESSIAH

                        Belfast                                                                                                                           Tewkesbury                                                                                          Dublin

                                          Sheffield                                                                                                Northampton                                                                                                  Liskeard

Evesham - A song recital with Keith Swallow

                                                                         Sheffield                                                                                                                                                                      Rugby   

                                                                  St.  John Passion                                                                                                                                                      Sea Symphony                     

Despite acclaimed success John Dethick was never invited to make a recording by any  record company.  The only disc he made was for Ambassador College, whose main base was at Pasadena, California,  during a performance of Messiah at Watford Town Hall in 1965.  Below is part of the record sleeve: