The brother of Leon Nijensohn. In 1927, Miguel joined a trio with Anibal Troilo, then only 13, and the violinist Domingo Zapia at the café Rio de al Plata in the neigh- borhood of Caballito. When he was 17, Miguel was called to join the sextet led by the violinist Roberto Dimas. Since 1935 he joined Los Poetas del Tango, a quintet lined- up with the bandoneonists Héctor Artola and Francisco Fiorentino and the violinists Antonio Rodio and Miguel Bonano. Around that time he made his debut as leader of his own group that he put together to play at the boite Lucerna on 567 Suipacha Street run by the violinist José Nieso. There he backed the singer Antonio Rodríguez Lesende with whom he premiered "Nostalgias", a tango piece written by Juan Carlos Cobián and Enrique Cadícamo. A very important step in Nijensohn's career was when he joined the Miguel Caló Orchestra in 1936 inwhich he was pianist as well as arranger. The latter task was shared with Argentino Galván.Three years later Héctor Stamponi replaced him until 1940 when Osmar Maderna joined the orchestra as pianist. The latter was responsible of the sound that should be the trademark of the orchestra forever. As composer he made some hitsby means of the recordings of Juan D'Arienzo, Miguel Caló, Carlos Di Sarli and other orchestras. Probably his most polished tango was "Un desolado cora- zón" with lyrics by the announcer RobertoMiró. Di Sarli recorded it with Oscar Serpa.