He was Kantor at the Neustädter Kirche, Hannover, from 1972 to 1991, where he focused on music in church services, but also conducted concerts, with a preference for works of Johann Sebastian Bach and his own teacher Ernst Pepping.

Born in Rheinsberg, he studied in Berlin at the Spandauer Kirchenmusikschule (Spandau academy of church music) with Gottfried Grote, Ernst Pepping and Herbert Schulze.

[4] Egidi founded a chamber orchestra Kammerorchester St. Johannis, mostly of teachers and students of the Musikhochschule Hannover, to play with the choir and perform instrumental concerts.

Coberg had been the first organist at the Neustädter Kirche, who composed the work likely for the memory of Heinrich von Voß, who had served at the court of Ernst August and died on 23 September 1682.

The work is set for up to eight voices and continuo and contains the ten stanzas of the hymn "Herr Jesus Christ, meins Lebens Licht" (1608), interspersed with concertos on Bible passages and a concluding motet for double choir.

[8] In his last concert before his retirement in 1991, Egidi performed once more in 1991 Bach's St Matthew Passion, with Dantes Diwiak as the Evangelist, Anselm Richter as vox Christi, Monika Frimmer, Ralf Popken and Joachim Gebhardt.