Friday Evenings: Slack Key Guitar Concerts.  Traditional Hawaiian slack key guitar and `ukulele concerts. April 1 – Honoring Raymond Kane; April 5 – Heart of Slack Key; April 12 – Kauai’s Slack Key; April 19 – Dreams Come True, April 26 – Gifts of the Ancestors.  Free gift drawing.  Tickets: $20 ($15 keiki/seniors).  A portion of the proceeds supports the Hale Halawai Ohana O Hanalei.  Hanalei Family Community Center.  4 to 6 p.m.  For information and reservations call (808) 826-1469…