 Although early Viennese pianos were in general rather inferior instruments, the fortepianos made by Mozart's friend Stein and Anton Walter, instruments that Mozart much admired, were much more suitable for Mozart's purposes.The fortepianos were of course much quieter instruments than the modern concert grand piano, so that the balance between the orchestra and soloist may not easily be reproduced using modern instruments, especially when small orchestras are used.The rise in interest in "authentic performance" issues in the last few decades has, however, led to a revival of the fortepiano, and several recordings now exist with an approximate reconstruction of the sound Mozart might have himself expected.