Wednesday Evenings: Slack Key Guitar Concerts.  Traditional Hawaiian slack key guitar and `ukulele concerts.  September 7 – Hawai`i’s Sunset Music; September 14 – Kaua`i Style Slack Key; September 21 – Your Island of Peace; September 28 – Slack Key in the Real Old Style. 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.   A portion of the proceeds…