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Speaking of practice, midifiles like this one -laid down with such a craft and talent- are excellent learning tools, because the musicians who recorded them spent hours listening to the original song, so for example the piano track plays exactly the same notes played by Jobim. And, since every sequencer today has the option of displaying the notes of each track, with a click of your mouse you have a faithful transcription of the original song.

They make also an excellent starting point to create a style, so I would say that they are really a great investment.

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