. . . . "He was also involved in the revival of Bach, and as early as 1809 had acquired the autograph of the 15 Inventions and 15 Sinfonias BWV772???801, part of the Clavier-B??chlein for W F Bach, and from 1823 in Kassel he began performing Bach???s motets alongside such composers as Palestrina and Carissimi." .