Sunday Afternoons:  Slack Key Guitar Concerts.  Traditional Hawaiian slack key guitar and `ukulele concerts.  December 2 – Aloha Music of Hawai`i; December 9 – Hawai`i’s Cowboy Music; December 16 – Ahupua`a – Mountain to Sea; December 23 – Slack Key Tour of the Islands; December 30 – Whales Homecoming.  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.…