Rather than attempting the impossible task of explaining how everything in jazz works, I’m going to pick a specific, fairly mainstream tune and talk you through it: “Someday My Prince Will Come” by Miles Davis, off the 1961 album by the same name.
First of all, here’s the original version from Snow White.
Once you’ve got the tune in your head, listen to the Miles Davis recording.
The long intro uses a pedal point, which just means that bassist Paul Chambers plays the same note over and over, creating a feeling of floating suspense. Drummer Jimmy Cobb plays gentle waltz time with his brushes: one-and-two-and-three-and, one-and-two-and-three-and. (Most jazz tunes are in four-four time, so each bar would have four beats.) Pianist Wynton Kelly plays some improvised figures based mostly on arpeggios.
At 0:40, Miles Davis enters, playing the melody on muted trumpet. Even though he interprets the tune’s timing very loosely and adds some ornaments of his own, you should have no trouble singing the words along with him. This section is called the head, and as is the case with a lot of jazz tunes, it’s thirty-two bars long. In case you’re a music reader, here’s the chart.
(Continued)