平和運動
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. He performed in 1979 Handel's Messiah, with soloists Ute Frühhaber, Renate Naber, Lutz-Michael Harder and Heiner Eckels. In 1982 he conducted Bach's "St Matthew Passion" with Harder as the Evangelist, and Gerhard Faulstich as vox Christi. On 11 June 1983 Egidi conducted Bach's Mass in B minor for the "". The last movement, "Dona nobis pacem" (Give us peace), matched a visible participation of members of the Peace movement in the audience. In 1986 he combined Stravinsky's and by Brahms, in 1988 he conducted Stravinsky's "Cantata" and Mozart's "Great Mass in C minor", in 1990 Bach's Mass in B minor.