Sunday Afternoons: Slack Key Guitar Concerts.  Traditional Hawaiian slack key guitar and `ukulele concerts.  August 6 – Hanalei Slack Key; August 13 – Honoring Raymond Kane; August 20 – Poina `Ole – Never to be Forgotten; August 27 – Spirit of Slack Key.  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. Free gift drawing.  A portion of…