Watch The Hawaiian Slack Key Guitar of Ledward Kaapana (1970) : Full Movie Online Free Ledward Kaapana is widely acknowledged to be one of the most exciting and accomplished players in ki ho'alu, or slack key guitar style. With its wide range of tunes and techniques, this lesson will satisfy players who are novices in the slack key style, as well as those who consider themselves advanced players. Ledward has given us something for everyone, and this DVD lesson will give you much to work on.