Frank Theuns completed his musical studies at the ‘Koninklijk Muziekconservatorium Brussel’. Deeply interested in historic instruments, he specialised in playing the Baroque transverse flute. With his ensemble Les Buffardins he has recorded a representative selection of the flute repertoire (Handel, Sammartini, Kirnberger, Quantz, Hotteterre, Montéclair, Boismortier, Blavet) for Accent. in 2006, he recorded the Concerto for Flute and Harp by W. A. Mozart with Anima Eterna Brugge under Jos van immerseel for the Zig-Zag Territoires label. This disc received many prizes in the musical press (e. g. the Diapason d’Or).

Passionate about original flutes, he has let himself be seduced as much by the extraordinarily different timbres as by the delightful small imperfections in the old flutes, apparent when applying the appropriate technique for each instrument. Over the past decade he has collaborated closely with the instrument maker Andreas Glatt as a ‘taster’ of flutes. He shares with him the same point of view regarding an ‘anti-dull’ authenticity, as much for the making of the flute as for the method of playing it.

Since 1989 he has taught Baroque transverse flute at the ‘Koninklijk Muziekconservatorium Brussel’. He is regularly invited to give courses on performance : Esmuc Barcelona, the Royal Conservatory of The Hague, ‘Internationale Händel-Akademie’ Karlsruhe, International Flutesymposium Atlanta etc. Currently he is flautist in the orchestras Anima Aeterna Brugge and La Petite Bande .