During his residence in Berlin, Bach composed a setting of the "Magnificat" (1749), in which he shows more traces than usual of his father's influence; an Easter cantata (1756); several symphonies and concert works; at least three volumes of songs, including the celebrated "Gellert Songs"; and a few secular cantatas and other occasional pieces. But his main work was concentrated on the clavier, for which he composed, at this time, nearly two hundred sonatas and other solos, including the set "" ("With Varied Reprises", 1760–1768).