Friday Evenings: Slack Key Guitar Concerts. Traditional Hawaiian slack key guitar and `ukulele concerts. May 1 – Ahupua`a – Mountain to Sea; May 8 – Dreams Come True; May 15 – Tour of the Islands; May 22 – Hanalei Slack Key; May 29 – Legends of Slack Key. 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…