Born in 2000, Leander Carlier received his musical education at the music academies of Aalst and Meise, the art high school of the Lemmens Institute, in classes of Katelijne Van Laethem, Elisabeth Hermans and Greetje Anthoni, and at the Municipal Conservatory of Bruges, with Sarah Peire. He obtained his master's degree at the Royal Conservatory of Antwerp, in the class of Gary Jankowski. He actively attended masterclasses with renowned singers such as Zeger Vandersteene, Claren McFadden, Lucienne Van Dyck, Raehann Bryce-Davis and Liesbeth Devos, and with pianists such as Malcolm Martineau, Maciej Pikulski, Aäron Wajnberg, Jozef De Beenhouwer and Piet Swerts.
Since 2018, after a successful audition, Leander has been singing in both the Octopus Chamber Choir and the Octopus Symphonic Choir, conducted by Bart Van Reyn, with concerts in Belgium and abroad. With this choir, he gave concerts at Festival van Vlaanderen, Klarafestival and Rheingau Festival Wiesbaden, with Belgian National Orchestra, Symphony Orchestra of La Monnaie De Munt and Orchestre Philharmonique Royal de Liège, among others. He collaborated
with conductors such as Leif Segerstam, Ryan Wigglesworth, Hugh Wolff, Gergely Madaras and Alain Altinoglu. In the same year, he performed his first leading role in the opera Les Indes Galantes by Rameau: the high-Inca Priest Huascar. In March 2020 he took on two other roles in this opera; Ali and Osman.
In 2020, he was admitted to the training program MM Academy of The Royal Theatre of De Munt La Monnaie. In 2022, Leander Carlier was appointed as MMSoloist, for the season 2022-2023. He sang roles the roles of Un Huissier de la Cour in Saint-Saëns' Henry VIII and Second Son in Shostakovich The Nose. In Mozart's opera Don Giovanni, he performed the role of Masetto and studied the role of Don Giovanni, as cover singer. Also in the operette La Périchole (Offenbach), he got the leading role
Piquillo, performing at the Centre of Arts DeSingel (2023). In addition to opera roles, Leander is regularly asked to perform in oratorios and cantatas by Handel, Bach and Buxtehude, among others.