Hoboekentanz is from the 1551 Susato Danserye, not Arbeau.

Lovely melancholic piece. London Pro Musica LPM 101 is a modern edition providing both score and parts widely stocked by your local corner purveyor of early music; lots mpre excellent music in it as well.

Music of the Renaissance was generally written in a minimal form, the performer was expected to demonstrate artful elaboration as well as resolve the musica ficta. 15c and earlier Composition considered the horizontal flows of notes in each part as well as the chords made at section ends. 16c saw more common use of 4vv and larger forces, and probably found it easier to work vertically; but this was a time of transition, both in composition and notation.

See the numerous works and articles on performance practice of the renaissance for details, in particular Willi Apel, _The Notation of Polyphonic Music 900-1600_; _Groves New Dictionary of Music and Musicians_ 'Notation', 'Performance Practice', 'Musica Ficta'.

Originally the clef-symbol was simply a letter for the reference pitch, in theory any of - a,b,c,d,e,f,g. Scribes gave the symbol a more stylized rendition over centuries of use, and only certain letters proved necessary in common music - g,c,f were the most seen and survive today. A gamma-ut clef is rare, but became useful in late 15c with certain works of Tinctoris, Ogekhem, et al which explored the use of the basso-profundo range.