Wednesday Evenings:  Slack Key Guitar Concerts.  Traditional Hawaiian slack key guitar and `ukulele concerts.  August 1 – Poina `Ole – Never to be Forgotten; August 8 – Gift of the Ancestors; August 15 – For the Birds; August 22 – `Ohana Slack Key; August 29 – Spirit of Slack Key. Award winning traditional Hawaiian slack key guitar and ukulele concerts featuring songs and stories telling its history.  Tickets $25 general admission, $20 Ages 13-19 & over 50, keiki under 5…