• Seit 1962 über 3.000 Orgelkonzerte in Deutschland, Frankreich, Holland, Belgien, Luxemburg, Oesterreich, Schweiz, Italien, Spanien, Portugal, Dänemark, Schweden, Norwegen, Finnland, Island, Großbritannien, Tschechien, Ungarn, Israel, U.S.A. (52 Tournéen in 35 verschiedenen US-Staaten), Canada, Australien, Neuseeland, Südafrika, Bahamas, Hongkong, Singapore, Bangkok.

Teilnahme an Orgelfestivals und Konzertreihen u. a. in:
Altenberg (Dom)
Bamberg (Dom)
Berlin (Dom)
Berlin (Kaiser-Wilhelm-Gedächtniskirche)
Berlin (Matthiaskirche)
Braunschweig (Dom)
Bremen (Dom)
Dortmund (St. Reinoldi)
Dresden (Kreuzkirche)
Erfurt (Dom)
Essen (Dom)
Frankfurt/M. (St. Katharinen)
Freiburg (Münster)
Fulda (Dom)
Hamburg (Hauptkirche St. Petri)
Hannover (Marktkirche)
Herford (Münster)
Ingolstadt (Münster)
Limburg (Dom)
Lübeck (Dom)
Mainz (Dom)
Münster (Dom)
Nürnberg (St. Lorenz)
Ottobeuren (Basilika)
Paderborn (Dom)
Passau (Dom)
Tübingen (Stiftskirche)
Überlingen (Münster)
Ulm (Münster)
Worms (Dom)

Alpe d'Huez (Notre-Dame des Neiges)
Aubigny (Pfarrkirche)
Auxerre (Cathédrale)
Bourges (Cathédrale)
Carcassonne (St-Nazaire)
Colmar (St-Martin)
Dijon (Cathédrale)
Ebersmünster (Basilika)
Lyon (Auditorium Maurice Ravel)
Montpellier (Cathédrale)
Mulhouse (St-Étienne)
Paris (Notre-Dame)
Paris (St-Sulpice)
Riquewihr (Ste-Marguerite)
Sélestat (St-Georges)
Thann (Münster)

Luxembourg (Cathédrale)

Alessandria (San Giovanni)
Arcore (Sant'Eustorgio)
Bergamo (Basilica Santa Maria)
Cagliari (Cattedrale)
Cagliari (San Rosalia)
Cantù (Basilica San Paolo)
Cantú (San Michele)
Como (San Fedele)
Como (Istituto Carducci)
Cucciago (San Gervaso)
Domaso (Chiesa Parrocchiale)
Lanusei (Tempio S. Giov. Bosco)
Milano (Dom)
Milano (San Gervaso)
Milano (Abtei San Franceso d'Assisi)
Nuoro (Cattedrale)
Pesaro (Chiesa di Cristo Re)
Porto San Giorgio (Cattedrale)
Rom (San Paolo entro le Mura)
Torino (San Rita)

Aberdeen (St Machar's Cathedral)
Aberdeen (Kirk of St Nicholas)
Arundel (Cathedral)
Blackpool (St-Anne's-on-Sea Parish Church)
Bolton (Parish Church)
Bury-St-Edmunds (Cathedral)
Canterbury (Cathedral)
Chester (Cathedral)
Christchurch (Priory)
Derby (Cathedral)
Doncaster (Minster)
Dunblane (Cathedral)
East Harling (St Peter & Paul)
Edinburgh (St Giles' Cathedral)
Edinburgh (Reid Memorial Church)
Edinburgh (St Cuthbert's Church)
Edinburgh (St Stephen's Church Center)
Ely (Cathedral)
Exeter (Cathedral)
Fort William (St Andrew's Church)
Glasgow (Kelvingrove Museum & Art Gallery)
Gloucester (Cathedral)
Hull (City Hall)
Ipswich (St Mary-le-Tower)
Leeds (Town Hall)
Lincoln (Cathedral)
Liverpool (Cathedral)
London (St Paul's Cathedral)
London (Westminster Cathedral)
London (Dtsch. Bonhoeffer-Kirche)
Meavy (St Peter)
Newcastle (Cathedral)
Newport/Wales (Cathedral)
Norwich (Cathedral)
Plymouth (Minster of St. Andrew's)
Ripon (Cathedral)
Rochdale (Town Hall)
Rochester (Cathedral)
Salisbury (Cathedral)
Selby (Abbey)
Skipton (Holy Trinity Church)
St. Asaph/Wales (Cathedral)
St. Davids/Wales (Cathedral)
Stirling (Holy Rude Church)
Tenby/Wales (St Mary' Church)
Tewkesbury (Abbey)
Truro (Cathedral)
Wakefield (Cathedral)
Wells (Cathedral)
Worcester (St Martin's Church)

Prag (St. Jacob)

Budapest (Franziskanerkirche; Matyas-Kirche)



Basel (St. Leonhard)
Bern (Münster)
Büron (Pfarrkirche)
Chur (St. Martin)
Engelberg (Abteikirche)
Fribourg (St-Pierre)
Gerliswil (Pfarrkirche)
Hergiswil (Pfarrkirche)
Lausanne (Cathédrale)
Lenzburg (Ref. Stadtkirche)
Littau (Pfarrkirche)
Lugano (Kathedrale)
Luzern (Hofkirche)
Luzern (Matthäuskirche)
Montreux (Festival)
Muri (Klosterkirche)
Roche (Orgelmuseum)
St. Gallen (Dom)
Weggis (Pfarrkirche)
Zürich (Fraumünster)
Zug (Festival)

Loyola (Basilica)
Mahon/Menorca (Kathedrale)
Marbella (Iglesia Paroquial)
San Sebastián (Basilica Santa Maria)

Lissabon (Igreja de Nossa Senhora de Fátima)

Alkmaar (Grote Kerk)
Gouda (Grote Kerk)
Haarlem (Grote Kerk St-Bavo)
Haarlem (Kathedrale-Basiliek St-Bavo)
Nijmegen (St. Stevens)
Utrecht (Dom)

Antwerpen (Kathedrale)
Antwerpen (St. Pauluskirche)
Brugge (Kathedrale)
Brüssel (Kathedrale)
Gent (Kathedrale)

Bodö (Dom)
Gjövik (Pfarrkirche)
Oslo (Dom)
Trondheim (Nidaros-Dom)

Haderslev (Dom)
Odense (Dom)
Svendborg (Vor Frue Kirke)

Eksjö (Pfarrkirche)
Göteborg (Dom)
Jönköping (Kristinakyrka)
Kalmar (Dom)
Karlstad (Dom)
Lund (Dom)
Malmö (St. Petri)
Stockholm (Oscarskyrka)
Stockholm (Johanneskyrka)
Stockholm (Klarakyrka)
Uppsala (Dom)
Västeras (Dom)
Västervik (St. Petri)

Espoo (Dom)
Helsinki (Dom)
Helsinki (Kallio-Kirche)
Helsinki (Meihladen-Kirche)
Juva (Pfarrkirche)
Kerava (Pfarrkirche)
Kotka (Pfarrkirche)
Kuopio (Alavan Kirche)
Lahti (Kreuzkirche)
Lahti (Joutjärvenkirche)
Loviisa (Pfarrkirche)
Multia (Pfarrkirche)
Pori (Stadtkirche)
Porvoo (Dom)
Tampere (Dom)
Tampere (Alexanderkirche)
Turku (Dom)

Reykjavik (Hallgrimskirkja)

Jerusalem (Dormition Abbey Mt. Zion)
Tel Aviv (Immanuel Church Jaffa)

Durban (Town Hall)
Johannesburg (Town Hall)
Kapstadt (Groote Kerk)

Adelaide (Town Hall)
Canberra (St. John's Church Reid)
Canberra (National Carillon)
Echuca (Christ Church)
Fremantle (St. Patrick's Basilica)
Goulburn (St. Saviour's Cathedral)
Melbourne (St. Paul´s Cathedral)
Melbourne (Town Hall)
Melbourne (Scots' Church)
Melbourne (Ormond College)
Melbourne (All Saints' Church)
Melbourne (St. Andrew's Church)
Newcastle (Christ Church Cathedral)
Perth (University of Western Australia)
Perth (St. George's Anglican Cathedral)
Sydney (St. Andrew´s Cathedral)
Sydney (St. James' Church)
Sydney (Christ Church St. Laurence)
Sydney (St. Stephen's Church)
Sydney (University of Sydney)
Sydney (St. Patrick's Cathedral Parramatta)
Sydney (German Lutheran Church)
Wangaratta (Holy Trinity Cathedral)


Auckland (Cathedral)
Auckland (St.-Matthew's-in-the City-Church)
Auckland (University, St. Andrew's Church)
Christchurch (Town Hall)
Dannevirke (Parish Church)
Dunedin (Town Hall)
Dunedin (Cathedral)
Hamilton (Waikato Cathedral of St. Peter)
Hamilton (St. Paul's Collegiate)
Hastings (St. Matthew's Anglican Church)
Hawera (Wesley Methodist Curch)
Kaikoura (St. Paul's Presbyterian Church)
Napier (St. John's Cathedral)
Nelson (Cathedral)
New Plymouth (St. Mary's Anglican Pro-Cathedral)
Oamaru (St. Paul's Anglican Church)
Palmerston North (All Saints' Anglican Church)
Palmerston North (Holy Spirit RC Cathedral)
Rotorua (St. Luke's Church)
Timaru (Sacred Heart Basilica)
Wanganui (Christ Church)
Wanganui (Collegiate Chapel)
Wellington (Town Hall)
Wellington (St. Paul's Cathedral)
Wellington (Old St. Paul's)
Wellington (Sacred Heart Basilica)
Wellington (National War Memorial)
Whangarei (Anglican Church)

Hongkong (Cultural Center Concert Hall)

Singapore (St. Andrew´s Cathedral)
Singapore (Orchard Road Presb. Church)

Bangkok (Christ Anglican Church)

Nassau/Bahamas (Cathedral)

Montréal (Oratoire St-Joseph)
Toronto (Metropolitan Church)

Albany NY (City Hall)
Albany NY (Westminster Presbyterian Church)
Albany NY (St. Peter's Episcopal Church)
Alexandria VA (Christ Church)
Alexandria VA (Old Presbyterian Meeting House)
Andover MA (Phillips Academy)
Angwin CA (Pacific Union College)
Arcadia CA (Presbyterian Church)
Arlington VA (St. Thomas More Cathedral)
Arlington VA (Christ Church)
Ashland KY (First United Methodist Church)
Atlanta GA (Druid Hills Baptist Church)
Auburn NY (Willard Memorial Chapel)
Bakersfield CA (St. John's Lutheran Church)
Baltimore MD (McDonogh School)
Bennington VT (Old First Church)
Berkeley CA (First Congregational Church)
Boston MA (Trinity Church)
Boston MA (Holy Cross Cathedral)
Boston MA (Old South Church)
Boston MA (Church of the Covenant)
Brattleboro VT (First Baptist Church)
Buffalo NY (St. Joseph's RC Cathedral)
Casper WY (First United Methodist Church)
Charlotte NC (Sharon United Methodist Church)
Chattanooga TN (St. Paul's Episcopal Church)
Chicago (Fourth Presbyterian Church)
Chicago (St. Paul's Church)
Clearwater FL (Peace Memorial Church)
Clearwater FL (St. Paul's Lutheran Church)
Clearwater FL (Church of the Ascension)
Cohasset MA (St. Stephen's Church)
Columbia SC (First Presbyterian Church)
Columbus OH (First Congregational Church)
Dallas TX (Highland Park Methodist Church)
Danbury CT (St. James' Church)
Danville VA (Church of the Epiphany)
Danville VA (Mount Vernon United Methodist Church)
Davenport IA (Trinity Cathedral)
Denver CO (RC Cathedral Basilica)
Denver CO (Bethany Lutheran Church)
Denver CO (First Plymouth Congregational Church)
Dunedin FL (St. Andrew's Presbyterian Church)
Escondido CA (Trinity Episcopal Church)
Estes Park CO (Presbyterian Community Church of the Rockies)
Fort Lauderdale FL (Coral Ridge Presbyterian Church)
Fredericksburg VA (Parish Church)
Gainesville FL (University of Florida)
Garden Grove CA (Crystal Cathedral)
Gloucester MA (Our Lady of Good Voyage Church)
Harrisonburg VA (Otterbein United Methodist Church)
Hartford CT (Trinity College)
Holyoke MA (United Congregational Church)
Honolulu HI (St. Andrew's Cathedral)
Honolulu HI (Central Union Church)
Houston TX (Carillon Center)
Lahaina HI (Holy Innocent's Church)
Lake Wales FL (First Presbyterian Church)
Las Vegas NV (University of Nevada)
Las Vegas NV (Christ Church)
Las Vegas NV (All Saint's Episcopal Church)
Little Rock AR (First United Methodist Church)
Long Beach CA (Los Altos United Methodist Church)
Los Angeles (First Congregational Church)
Los Angeles (Immanuel Presbyterian Church)
Los Angeles (RC Cathedral "Our Lady of the Angels")
Los Angeles (St. John's Episcopal Cathedral)
Lubbock TX (Texas Tech University)
Luray VA (Luray Caverns)
Memphis TN (St. Mary's Cathedral)
Methuen MA (Methuen Memorial Music Hall)
Middlebury VT (College)
Minneapolis MN (Wayzata Community Church)
Napa CA (Mont LaSalle Abbey Church)
Nashville TN (First Presbyterian Church)
New Canaan CT (St. Mark's Church)
New Haven CT (Yale University)
New Haven CT (St. Thomas Episcopal Church)
New Haven CT (St. Mary's RC Church)
New York City (Riverside Church)
New York City (St. Bartholomew's Church)
New York City (St. Thomas' Church Fifth Avenue)
Northampton MA (Smith College)
Northfield VT (University)
Norwood MA (Town Hall)
Oakland CA (Grand Avenue Seventh Day Adventist Church)
Ocean Grove NJ (Auditorium)
Palm Desert CA (St. Margaret's Episcopal Church)
Palo Alto CA (All Saints Church)
Pasadena CA (Presbyterian Church)
Pasadena CA (Westminster Presbyterian Church)
Philadelphia PA (Curtis Institute)
Philadelphia PA (University Houston Hall)
Pittsfield MA (St. Stephen's Episcopal Church)
Portland ME (City Hall)
Portsmouth OH (Trinity United Methodist Church)
Redlands CA (University of Redlands)
Redlands CA (First United Methodist Church)
Redwood City CA (St. Pius RC Church)
Reno NV (Trinity Episcopal Church)
Richland WA (All Saints' Episcopal Church)
Riverside CA (University of California)
Rochester MN (Mayo Clinic)
Rochester MN (United Methodist Church)
Round Lake NY (Auditorium)
Rutland VT (Trinity Episcopal Church)
Sacramento CA (St. John's Lutheran Church)
Sacramento CA (Church of the Holy Spirit)
Sacramento CA (All Saints' Episcopal Church)
San Antonio TX (Central Christian Church)
San Diego CA (St. Paul's Cathedral)
San Diego CA (La Mesa 1st Church of Christ, Scientist)
San Francisco (Grace Cathedral)
San Francisco (St. Mary's Cathedral)
San Francisco (Trinity Episcopal Church)
San Francisco (St. Francis-of-Assisi Church)
Santa Monica CA (First Presbyterian Church)
Seattle WA (Plymouth Congregational Church)
Simsbury CT (United Methodist Church)
Spokane WA (St. John's Cathedral)
Springfield MA (Trinity United Methodist Church)
Stamford CT (First Presbyterian Church)
Stamford CT (St. Andrew's Church)
Storrs CT (University of Connecticut)
St. Helena CA (Grace Episcopal Church)
St. Johnsbury VT (St. Andrew's Episcopal Church)
St. Paul MN (Church of St. Louis)
St. Paul MN (St. Mark's Lutheran Church)
St. Petersburg FL (Cathedral of St. Peter)
Waco TX (Baylor University)
Washington DC (National Cathedral)
Washington DC (National Shrine)
Washington DC (National City Christian Church)
Washington DC (Church of the Epiphany)
Washington DC (Foundry Methodist Church)
Washington DC (The United Church)
West Hartford CT (First Church of Christ)

• CD-Einspielungen bei Motette, Organophon, Wergo/Schott, IFO-Verlag u.a.
• Rundfunkaufnahmen (WDR, NDR, SFB, HR, div. Stationen in USA, Australien, Neuseeland), Fernsehaufnahmen (ZDF-"Sonntagskonzert": Div. Produktionen der Reihe "Orgellandschaften")
• Seit 1974 Organisation und künstlerische Leitung von jährlichen Orgelstudienfahrten im In- und Ausland
• Kompositionen für Orgel (H.T.FitzSimons, USA; Taverner Edition; Butz-Verlag), Carillon und Solostimmen

Autor der Bücher
"Alexandre Guilmant - Leben und Werk" (Dohr Verlag Köln), „Berühmte Orgeln der USA“ (Dohr Verlag Köln); "Die Orgel der Marktkirche Wiesbaden" (Organophon Verlag Windesheim), zahlreiche Publikationen in Fachzeitschriften.
Übersetzungen amerikanischer und französischer Fachartikel
und Bücher, u.a. Michael Murray: "Marcel Dupré - The Life of a Master Organist" (Edition Lade, Wien) und Jenny Setchell: "Organ'isms - Anecdotes from the World of the King of the Instruments" (Verlag Dr. Butz, Bonn)

1985 Organist an der Immanuel Presbyterian Church in Los Angeles, California, in einem Austauschprogramm mit Prof. Dr. Samuel Swartz

1985-1993 jährliche Gastprofessur an der University of Redlands, Redlands, California

1985 Ernennung zum "Chevalier de l'Ordre des Arts et des Lettres" durch den französischen Kultusminister in Paris, Jack Lang, für Verdienste um die französische Orgelmusik

Mitglied der AGO (American Guild of Organists), OHS (Organ Historical Society), GCNA (Guild of Carillonneurs in North America)