Friday Evenings: Slack Key Guitar Concerts. Traditional Hawaiian slack key guitar and `ukulele concerts. July 3 – Kaua`i Slack Key; July 10 – Hawai`i’s Cowboy Music; July 17 – Ohana Slack Key; July 24 – Gift of the Ancestors; July 31 – Traditional Hawaiian Slack Key. Free gift drawing. Tickets: $20 ($15 keiki/seniors). Slack key guitar and `ukulele in the real old style.  All traditional music with songs and stories of the islands, telling the history of this Hawaiian musical art…