[2] At age 16, he conducted his first premiere, a youth club production of Stephen Sondheim's Zustände wie im alten Rom (A Funny Thing Happened on the Way to the Forum), at the Stadttheater Regensburg.
[2] After his Abitur, he studied conducting with Hans-Rainer Förster and Peter Falk at the Hochschule für Musik Würzburg and with Johannes Schlaefli at the Zurich University of the Arts.
[1] He opened his first season there with Mozart's Die Zauberflöte for children, and conducted new productions of Wagner's Tannhäuser, Verdi's Un ballo in maschera and Arabella by Richard Strauss.
[1][3] The performance of Tannhäuser, with Lance Ryan in the title role and Sabina Cvilak as Elisabeth, staged by Uwe Eric Laufenberg, was recorded live.
[5] In September 2021, Lange requested to be released from his Wiesbaden contract, ahead of the originally scheduled 2022–2023 season conclusion.