Sunday Afternoons: Slack Key Guitar Concerts. Traditional Hawaiian slack key guitar and `ukulele concerts. March 1 – Dreams Come True; March 8 – Slack Key Tour of the Islands; March 15 – Hanalei Slack Key; March 22 – Legends of Slack Key; March 29 – Honoring Raymond Kane. Tickets: $20 ($15 keiki/seniors). The concerts are nahenahe - soft and sweet.  Slack key guitar and `ukulele in the real old style.  All traditional music with songs and stories of the islands,…