Helgesson's talent was recognised early, and he was accepted at the
National Opera Studio in London. From there he moved to the Opera Studio of
Opernhaus Zürich, where he was able to work with conductors
Bernard Haitink,
Zubin Mehta,
Nello Santi, and
Ingo Metzmacher. During this time Helgesson was the
cover for
Thomas Hampson in Verdi's
I masnadieri. Throughout his career, Helgesson has demonstrated his range in numerous styles, from classical and baroque opera to world premieres and original compositions. He has performed around 50 parts including
Barbiere,
Don Giovanni,
Eugene Onegin,
Billy Budd, Escamillo in
Carmen, and Enrico. He has performed in China at the Beijing Modern Music Festival, and throughout Europe at venues such as
Berliner Philharmonie, Markgräfliches Opernhaus im Rahmen der Bayreuther Festspiele, Göteborgsoperan, Norrlandsoperan, Berwaldhallen, Stockholm Concert Hall, Tonhalle Zürich, Opern Halle, Gare du Nord Basel,
Reykjavik Arts Festival and Oslo Ultima Festival. From 2012-2015, Helgesson was house baritone for Landestheater Schleswig-Holstein. Helgesson was a member of the Gothenburg Opera in Sweden from 2017 to 2019, appearing as The Phantom of the Opera, and as Dom
Claude Frollo in Disney's
The Hunchback of Notre Dame. In early 2020 during the
coronavirus pandemic, Helgesson performed opera from the balcony of Norrbottenteatern and was streamed on national television and radio in Sweden. == Notable performances ==