They played here on the 4th of July. I didn't go but a friend went and said they had a bass player and even a drummer for some songs - couldn't tell you who they were though. There aren't a lot of bassists over here so a lot of bands fly their guys in from Honolulu or wherever.
Ever heard of John Cruz by chance? He's a local guy here that's starting to get some attention (he's been doing it for 20 years). He gets lumped into the slack key stuff, but he does do some rock songs. He's got some big hits on the radio: Island Style and Shine On among others. He also won a Grammy this year - it's the first time they've ever had a Hawaiian category. He came and recorded some vocals at our little studio recently - really cool guy.
http://www.johncruz.com/
I'm guessing you don't get many concerts there so don't miss C&K!
Aloha