 It is not clear why , in 1873 , Alkan decided to emerge from his self @-@ imposed obscurity to give a series of six Petits Concerts at the Érard piano <unk> . It may have been associated with the developing career of Delaborde , who , returning to Paris in 1867 , soon became a concert fixture , including in his recitals many works by his father , and who was at the end of 1872 given the appointment that had escaped Alkan himself , Professor at the Conservatoire . The success of the Petits Concerts led to them becoming an annual event ( with occasional interruptions caused by Alkan 's health ) until 1880 or possibly beyond . The Petits Concerts featured music not only by Alkan but of his favourite composers from Bach onwards , played on both the piano and the pédalier , and occasionally with the participation of another instrumentalist or singer . He was assisted in these concerts by his siblings , and by other musicians including Delaborde , Camille Saint @-@ <unk> , and Auguste Franchomme . 
