[2] Röhr first worked as a solo répétiteur at the court opera there in 1886 and as a conductor at the Theater Augsburg municipal theatre in 1887/88.

In the 1888/89 season, he worked at the Hoftheater Kassel, then at the Deutsches Landestheater in Prague and from 1890 until 1892 in Breslau, where he married the soprano Sofie Röhr-Brajnin [de], who became famous later on.

There, he also became recognised as composer with his oratorio Ekkehard, which he conducted within the famous concert series Musikalische Akademie in both 1901 and 1902.

In 1904, he created his first opera, Das Vaterunser, to a libretto by Ernst von Possart, performed at the court theatre.

In 1922 he became a lecturer at the Akademie der Tonkunst, Munich, where he became appointed professor after one year, and was a teacher for conducting and directed the opera school and orchestra exercises until 1934.