2 inventions for flute and guitar Bach, J. S. Aerts, Bart M.J. Studie nr. 5 Ruys, Florimond Studie nr. 4 Ruys, Florimond Studie nr. 3 Ruys, Florimond Studie nr. 2 Ruys, Florimond Studie nr. 1 Ruys, Florimond