Bastian Heymel grew up in a musically influenced family and was trained on piano and violoncello from an early age. After graduating from high school, he first studied school music, majoring in piano and voice, at the Hannover University of Music and Drama, and later studied psychology and pedagogy at the Leibniz University in Hannover. He then completed his postgraduate artistic studies in orchestral conducting (Kapellmeister studies) at the Hochschule für Musik "Hanns Eisler" in Berlin, which he supplemented with various master classes (taught for example by Sergiu Celibidache). He was also a scholarship holder of the Richard Wagner Scholarship Foundation.

In addition to the Junge Sinfonieorchester an der WWU, Heymel has worked with several orchestras, including the Münster Symphony Orchestra, the Neubrandenburg Philharmonic, the Elblandphilharmonie Riesa and the Babelsberg Film Orchestra. Heymel gained many years of conducting experience by leading the symphony orchestra of the Hannover Medical School. During this time, he was able to decisively expand his symphonic repertoire.

At the Theatre Münster, Bastian Heymel conducted numerous repertoire performances from all areas of musical theatre, including operas by Mozart (Entführung aus dem Serail), Wagner (Lohengrin), Verdi (Otello/Rigoletto), Puccini (Madama Butterfly), Dvořák (Rusalka), Meyerbeer (Le Prophète), Berlioz (Bénedict et Béatrice), Rossini (La Cenerentola), Lortzing (Zar und Zimmermann), operettas by Strauss (Die Fledermaus), Léhar (Das Land des Lächelns), Offenbach (Pariser Leben/Die schöne Helena), Zeller (Der Vogelhändler), Benatzky (Im weißen Rössl) as well as musicals by Webber (Evita/Jesus Christ Superstar), Kander (Cabaret), Herman (La cage aux folles) and Holmes (Das Geheimnis des Edwin Drood).

As a solo répétiteur, he developed an extensive and stylistically broad repertoire in opera, ranging from Monteverdi's baroque opera to Richard Wagner's music dramas and contemporary works of musical theatre.

In addition to a teaching position conducting the Junge Sinfonieorchester an der WWU, Heymel also holds a teaching position in accompaniment for voice and ensemble at the Münster University of Music.