"Keyboard instrument music." . . "Klaviermusik." . . . . "Pianomuziek." . . "Instrument à clavier, Musique d' 18e siècle Histoire et critique." . . . . "Criticism, interpretation, etc"@en . "Criticism, interpretation, etc" . "The keyboard music of J.C. Bach source problems and stylistic development in the solo and ensemble works"@en . . . . . . . . . . . . . . . . . "The keyboard music of J.C. Bach : source problems and stylistic development in the solo and ensemble works"@en . "The keyboard music of J.C. Bach : source problems and stylistic development in the solo and ensemble works" . . . "The keyboard music of J. C. Bach : source problems and stylistic development in the solo and ensemble works" . "The keyboard music of J.C. Bach" . .