Alexandra Diesterhöft was born in Hanover, Germany and initially studied Business Administration and Tourism in Germany, France and England. After earning a Bachelor's degree in European Tourism, Alexandra was awarded a Master of Arts (Opera singing) with distinction in 2012 and a Master of Arts (Vocal pedagogy) with distinction in 2014 at the Anton Bruckner University in Linz, Austria. In the following years further important studies continued with with Nada Kecman and Valentina Kutzerova who accompanied and shaped the artistic development of the young singer.
During and after her studies Alexandra attended masterclasses with Marilena Laurenza, Nicholas Carthy, Guido Baehr, Franz Welser-Möst, Thomas Quasthoff, Darina Takova and Nada Kecman. In 2009/2010 and 2012/2013 she received a performance grant from the Federal Ministry of Science and Research to recognize her outstanding artistic achievements.
Since 2008 Alexandra has been a soloist in Bach's Passion of St. Matthew (in the Old Cathedral of Linz), and has played the parts of "Serpina“ in Pergolesi's La Serva Padrona, "Pamina“ in Mozart's opera The Magic Flute (in Linz and Bad Hall), "Anne“ in Grigori Frid’s contemporary opera The Diary of Anne Frank (in Mauthausen, Linz and Melk) and "Sylviane“ in "The Merry Widow“ at the Zwingenberg-festival.
From 2011-2013 she was a guest member for two seasons at the opera house in Linz, Austria, where – amongst other parts - she has been singing the "Contessa di Ceprano" as well as the "Paggio" in Verdi's Rigoletto. In 2013 she sang the “Voice of a child“ in the world premiere of P. Androsch’s Spiegelgrund in the Parliament of Vienna and at the Bruckner-festival Linz. During the 2016/2017 season she sung the part of "Barbarina" in Mozart’s Le nozze di Figaro at the opera of Koblenz, Germany.
Alexandra also maintains a busy concert schedule, regularly performing in concerts, recitals and chamber music soirees in Hanover, Mannheim, Malta, Graz, Salzburg, Linz and Vienna, as well as working as a professional vocal coach.