played at the Spreckels Organ Pavilion in San Diego. In 2010, he gave a recital at St. Ignatius Loyola, New York. Since 1992, Dessauer has conducted events for the Rheingau Musik Festival called the Orgeltour (organ tour), visiting historic organs in the region. The first tours covered historic organs of the Rheingau; later ones extended to the cathedrals of Worms and Speyer, Würzburg, and Fulda. Until 2010, Dessauer played a regular concert on New Year's Eve on the Walcker organ at the Marktkirche, Wiesbaden, together with church organist Hans Uwe Hielscher. To celebrate the bicentenary of Franz Liszt's birth in 2011, he played three major organ works by the composer on instruments that were built around the time of the compositions, Fantasy and Fugue on the Theme B-A-C-H, Variations on Bach's "Weinen, Klagen" (1863), and Fantasy and Fugue on the chorale Ad nos ad salutarem undam. In 2014, Dessauer toured in the US, playing concerts at the Washington National Cathedral, at St. Mary's Cathedral in San Francisco, California, and at the Salt Lake Tabernacle organ in Salt Lake City. In 2020, Dessauer organised the Winterspiele concert series to honour the 150th anniversary of Louis Vierne, playing his Third Organ Symphony, among others, in the summer instead of winter because the planned concert was cancelled due to the coronavirus pandemic. Dessauer retired at the end of 2021, succeeded by Johannes Schröder. Teaching From 1995 to 2013, Dessauer was an organ teacher at the Hochschule für Musik Mainz, part of the Gutenberg University in Mainz. Reger-Chor In 1985, Dessauer invited singers to form a choir to perform a single work, the Hebbel-Requiem of Max Reger in the organ version by the Munich organist and composer Max Beckschäfer. The name Reger-Chor was chosen in 1988, when the next project was dedicated to the German premiere of Joseph Jongen's Missa op. 111. Later projects included one of the first performances in Germany of Rutter's Requiem, recorded on the Reger-Chor's first CD in 1990. In 2001 an international collaboration began with the organist Ignace Michiels, bringing together an almost equal number of singers from Flanders and the Rhein-Main Region to perform an annual concert both in Germany and Belgium. In 2003 he conducted the premiere of the organ version of Reger's Der 100. Psalm by François Callebout. In addition to works by Reger, Dessauer chose rarely-performed church music by composers such as Herbert Howells, Benjamin