- Howard Mayer Brown
According to C.P.E. Bach, Marpurg and Quantz in the 18th century, an Abzug is a decrescendo into the principal note from a long appoggiatura. Georg Simon Löhlein (Clavier-Schule, 1765 and later) said ‘Abzug’ is synonymous with ‘Schneller’, that is, a trill with one repercussion starting and ending with the main note, the ornament called ‘inverted mordent’ by some writers. For these meanings of the term see F. Neumann: ...