Friday Evenings: Slack Key Guitar Concerts. Traditional Hawaiian slack key guitar and `ukulele concerts. December 5 – Heart of Slack Key Guitar & Ukulele; December 12 – Spirit of Slack Key Guitar & Ukulele; December 19 – From Mountain to Sea; December 26 – Dreams Come True. Free gift drawing. Tickets: $20 ($15 keiki/seniors). Slack key guitar and `ukulele in the real old style.  All traditional music with songs and stories of the islands, telling the history of this Hawaiian musical…