Sunday Afternoons: Slack Key Guitar Concerts.  Traditional Hawaiian slack key guitar and `ukulele concerts.  May 5 – Slack Key Tour of the Islands; May 12 – Honoring Keli`i Mawae of Molokai; May 19 – Hawai`i’s Sunset Music; May 26 – Kaua`i Style 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 free. Free gift drawing.  A portion…