Friday Evenings: Slack Key Guitar Concerts. Traditional Hawaiian slack key guitar and `ukulele concerts. June 2 – Honoring Raymond Kane; June 6 –– Hawai`i’s Cowboy Music; June 13 – Traditional Hawaiian Slack Key Guitar & Ukulele; June 20 – Gifts of the Ancestors; June 27 – Hawai`i’s Sunset Music. 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…