This is a great tool for learning how to improvise melodies and different accompaniment patterns. This exercise loops through half of the keys and will help the pianist improve his/her skills.
FreePianoPlayingTips.com offers some free practical e-mail video lessons from virtuoso teacher, Yoke Wong. She also has some excellent DVD lessons and books that may be purchased as well. A another great choice for those wanting to take their improv to another level. Check it out!