It's clearly a midifile, and an excellent one at that, because it reproduces almost note for note the original recording in the Getz-Gilberto LP.
There are only three faults:
1- The jazz guitar should be an acoustic guitar
2- the G-70 Alto Sax has too much reverb and the sample doesn't do justice to Stan Getz (but on the other hand no sample in the world could...)
3- the piano track is at times too loud, especially in the left hand (Jobim in this LP played in a much more subdued way, being almost too attentive to never get in the way and merely contenting himself to complement what Joao and Astrud Gilberto were singing or Stan Getz was playing).
Fran, I would GREATLY appreciate if you could point me to the source of this midifile, because I would love to make a bossa nova style with it.
Yamaha, Korg and Roland, please take note: this is the way a bossa nova style should sound.
Way

!