Original: From 1907 to 1923 Cortot taught at the Paris Conservatoire , where his pupils included Clara Haskil , Yvonne Lefébure , Dinu Lipatti , Vlado Perlemuter , and even Marguerite Monnot , French composer of most of the best songs of Édith Piaf and of the 1956 stage musical Irma la Douce .
Simplified: From 1907 to 1923 Cortot taught at the Paris Conservatoire , where his pupils included Clara Haskil , Dinu Lipatti , Vlado Perlemuter .