|Born||1981 (age 35–36)
Auerbach, Saxony, Germany
Erler was born in Auerbach. He attended the musical gymnasium Clara-Wieck-Gymnasium in Zwickau, and studied at the Musikhochschule Leipzig with Maria Jonas and Marek Rzepka, on a scholarship of the Hanns Seidel Foundation. He took masterclasses with Andreas Scholl, Marius van Altena and The King’s Singers. He graduated in 2006.
In the field of historically informed performance, Erler has collaborated as a soloist with conductors such as Manfred Cordes, Peter Van Heyghen, Hermann Max, Ludger Rémy and Roland Wilson. He has appeared as a guest singer with vocal ensembles Singer Pur and Stimmwerck. In 2002, he performed the alto part in a recorded performance of Bach's St John Passion with the Leipziger Oratorienchor, with Martin Krumbiegel both conducting and singing the part of the Evangelist. In 2013, Erler was one of the five guests of the ensemble amarcord for the performance of Monteverdi's Vespers as the annual Marienvesper of the Rheingau Musik Festival in Eberbach Abbey, with the Lautten Compagney conducted by Wolfgang Katschner.  In Bach's Mass in B minor, he sang the alto part, including soprano II in duets with soprano Gabriela Eibenová, in St. Martin, Idstein, with the orchestra L'arpa festante conducted by Franz Fink. He appeared in a recording of works by David Pohle, a student of Heinrich Schütz, by the same orchestra conducted by Rien Voskuilen.
Erler is a member and soloist of the Dresdner Kammerchor, conducted by Hans-Christoph Rademann. A review of their complete recording of the works by Heinrich Schütz noted about the eight soloists performing Kleine geistliche Konzerte 1 (Little Sacred Concertos): "Whether solo, duo or in other combinations the voices are finely scaled, appropriately clear, purely focused and idiomatic".
- "David Erler (Counter-tenor)". bach-cantatas.com. Retrieved 18 June 2014.
- "David Erler". Bachwoche Ansbach. Retrieved 18 June 2014.
- Claudio Monteverdi / Marienvesper (in German). Rheingau Musik Festival. 15 August 2013.
- Zibulski, Axel (17 August 2013). "Rheingau Musik Festival: Claudio Monteverdis "Marienvesper" in der Basilika von Kloster Eberbach" (in German). Wiesbadener Tagblatt. Retrieved 17 August 2013.
- "Das Wagnis hat sich gelohnt / Bachs "h-Moll-Messe" in St. Martin in Idstein" (in German). St. Martin, Idstein. Retrieved 14 August 2014.
- Wenda, Manuel (1 October 2013). "Bachs "h-moll-Messe" in St.Martin in Idstein" (in German). Wiesbadener Kurier. Retrieved 2 October 2013.
- "Pohle: Wie der Hirsch schreyet". Carus-Verlag. Retrieved 22 June 2014.
- Woolf, Jonathan (2014). "Heinrich Schütz (1585-1672) / Kleine geistliche Konzerte 1 (Little Sacred Concertos)". musicweb-international.com. Retrieved 18 June 2014.