Columbia subject headings:
Music--Instruction and study--Early works to 1800.
Sight-singing.
Harvard subject headings:
Music theory--Early works to 1800.
Sight-singing--Early works to 1800.
Sight-singing.
Solmization--Early works to 1800.
Princeton subject headings:
Music--Instruction and study--Early works to 1800.
Sight-singing--Early works to 1800.