Symphony No. 10 in Fis major was left uncompleted at his death in 1911 by Austro-Bohemian composer Gustav Mahler (1860 - 1911). For many decades all we had was a substantially complete first movement, marked Adagio, which was published a few years after his death. The other four movements existed only in draft scores, often not orchestrated yet. Several musicologists have created performable versions of the complete tenth symphony based on Mahler's notes, but the most successful one was Deryck Cooke who worked on the completion from the mid sixties onward. Most of the recorded tenths are based on his work - although it should noted that many notable Mahler conductors, like Bernstein and Haitink, refused to record more than the Adagio first movement. Although it is obviously not 100% Mahler, it is close enough for me, and I really love listening to the completed work. The average playing time is 76 minutes (AllMusic). I have a handful versions, of which I picked the one by the SWR Symphony Orchestra under Michael Gielen on a Hänssler CD.
