Saturday Evenings: Slack Key Guitar Concerts.  Traditional Hawaiian slack key guitar and `ukulele concerts. May 6 – Poina `Ole – Never to be Forgotten; May 13 – Aloha Music of Hawai`i; May 20 – Hawai`i’s Cowboy Music; May 27 – Gifts of the Ancestors.  Free gift drawing.  Award winning traditional Hawaiian slack key guitar ad ukulele concerts featuring songs and stories telling its history.  Tickets $25 general admission, $20 Ages 13-19 & over 50, keiki under 5 free.  Proceeds support…