[4] In 1984 he prepared the Tölzer Knabenchor for a recording of Bach's Mass in B minor with Andrew Parrott and the Taverner Consort and Players[1] Starting in 1993 he shaped the Händel-Festspielorchester, the orchestra of the Handel Festival, on period instruments,[5] which earned him the Festival's Handel Prize of 1996.

[6] He conducted Handel's opera Tolomeo in 1996 at the festival, probably the first production and recording of the work with period instruments.

Four choirs and two orchestras reconstructed a memorial concert, held for the composer in 1784 in Westminster Abbey, including Zadok the Priest (one of Handel's Coronation Anthems).

[11][12] In 2010 Arman conducted Mozart's Le nozze di Figaro at the Luzerner Theater, directed by David Herrmann.

[13] Arman recorded Heinrich Ignaz Franz Biber's Marienvesper 1693 (Vesperae longiores ac breviores (1693), a setting of the Vespers), with the Salzburger Bach-Chor.