Birth of the Cool' became a collector's item, I think, out of a reaction to Bird and Dizzy's music. Bird and Diz played this hip, real fast thing, and if you weren't a fast listener, you couldn't catch the humor or the feeling in their music. Their musical sound wasn't sweet, and it didn't have harmonic lines that you could easily hum out on the street with your girlfriend trying to get over with a kiss.
Miles DavisThat was my gift . . . having the ability to put certain guys together that would create a chemistry and then letting them go; letting them play what they knew, and above it.
Miles DavisAnybody can play. The note is only 20 percent. The attitude of the motherfucker who plays it is 80 percent.
Miles Davis