Globally recognized for superior craftsmanship and meticulous attention to detail since 1983, Lee Oskar Harmonicas pioneered an interchangeable and replaceable system of reed plates, combs and cover plates that has become the industry's gold standard. The Lee Oskar Harmonicas System features four distinct harmonica models in standard and altered tunings, available in multiple keys, for playing many different musical genres. Oskamonica (model #LO4): Take this cute mini harmonica with you everywhere! The 4 hole Oskamonica (in key of C).