World’s Smallest Harmonica Bring a little bit of music into your life with the World’s Smallest Harmonica! It is absolutely perfect for any budding musicians and is in complete working order!  The harmonicas have four chambers, with both draw and blow reeds, combining for 5 different notes! It plays in the Key of C and contains a metal cover with base plates. Attached to the harmonica is a keyring, for ease of use. There are three different harmonicas that you might receive. One is gold, one silver, and one black. We cannot guarantee that you will receive the design of your choice but if you order more than one, we will endeavour to ensure that you receive different designs! This makes a fabulous fun gift for birthdays or Christmas for any music lover.