bach's sonatas for violin and keyboard featured in the repertoire of the paris concerts and prompted the musicologist françois-joseph fétis to comment that, "anybody who has not heard bach's beautiful compositions played by mme bigot, lamare and baillot will not know how far the perfection of instrumental music can go." later around 1820 fétis himself attempted unsuccessfully to advance the "musique d'autre-fois" of bach: his invitation for subscriptions to a proposed publication of organ works by bach elicited only three responses.