sentences:  He can play the bandoneón by ear but wants to have proper training in music at a conservatory run by a frustrated old musician, Don Matias (Ricardo Galache).The old man first rejects both Roberto and his instrument, but after hearing him play, he changes his mind and takes him on, though forbidding him to play popular music, which he despises.Roberto becomes a great classical pianist, but as he acquires proficiency, he secretly composes tangos too.