The chord symbols above the above example relate directly to the arpeggios played by the saxophone. However, because the saxophone is a transposing instrument, these chord symbols will be in a different key to the one used by concert pitch instruments like piano or guitar.
The following example shows the same riff with the accompanying chords for both the alto and tenor versions written above them. Because the riff is played in the key of C minor on the saxophone, the accompanying chords for the alto version are written in the key of Eb minor while the chords for the tenor version are written in the key of Bb minor. If you are still unsure about the relationship between the key you are playing in and the key the accompaniment is in, refer to the chart on page 101.