This website provides a variety of jazz piano lessons. At the moment it contains
three songs, each having five to seven lessons that build on one another.
With this ballad you can learn to play solo piano using the stride technique and later combine it with a blockchordish style.
In the end there are two examples for improvising, which switch from normal to double time.
After learning the melody and the bass, these lessons start with an easy arrangement using just the rudimental chord notes and lead to a complex version with big voicings and secundary dominants.
The last lessons are two examples how to play a solo using chromatic approach to triad tones or just by using the blues scale.