c. 1600
Aurelio Virgiliano offers the earliest diagrammatic representation of trombone slide positions in his treatise, Il dolcimelo (see below image; click on picture to expand; public domain) (Herbert, Sackbut 73; Virgiliano 51-52).
Aurelio Virgiliano offers the earliest diagrammatic representation of trombone slide positions in his treatise, Il dolcimelo (see below image; click on picture to expand; public domain) (Herbert, Sackbut 73; Virgiliano 51-52).