Carl Fischer
Selected from the Vocalises of Marco Bordogni
Marco Bordogni (composer), Sean O'Loughlin (arranger)

These 54 etudes are a bit different from the familiar since they are based on vocalises of Marco Bordogni (1788-1856). The etudes are in a variety of keys and difficulty levels from perhaps mid-second year through fourth year of study.
There are some pieces in keys with three or four flats or sharps that should prove useful to third year students.