You start out listening to Miles with 'Kind of Blue', maybe 'Sketches of Spain' or 'Bitches Brew'.  This series of Prestige recordings is draw-dropping jazz; I defy anyone to listen to 'My Funny Valentine' and not be profoundly moved.  Red Garland has been much maligned as a 'cocktail pianist' and has been overshadowed by Bill Evans and Herbie Hancock in the Annals of Jazz Revisionism.  But it's Garland's sublime light touch that sets Miles up for that rasping whisper at the top of the mix.  For me, this is Miles at his beautiful best -- it is the album I come back to time and time again.  Get the whole series (Cookin', Steamin', Relaxin' etc) it is the greatest jazz education you could ever wish for.  Play it in the bath.  Float away for ever.