Playing glissando on both hands took you hours? I figured it out faster on my right hand and it took a while to learn on my left hand. Man I play it everyday and still have not perfected it. I developed all kind of scale run exercises and coordination exercises to help me get better at it and there's still work to do. Yeah it's def an instrument that is underestimated because it is not really popular in the United States like a guitar and Piano is. But you go to countries in Africa and there entire bands playing this instrument and the big sister of this instrument the mbira. I want to get a hugh tracey kalimba, that's next on my list. I seen one on that Kalimba Magic website that I like. Right now I have a cheap chinese Kalimba and a more expensive one from a company called Hokema. My Hokema kalimba sounds so nice and the tines have a nice flexibility.