Registers categorizes the timbre of the ukulele. As with other stringed instruments, three registers are distinguished that are produced (in the case of an acoustic instrument) according to the position of the strumming hand:
Above the sound hole: „normal“
By making use of registration (i.e., by using different tone colors), the performance of a musical piece can be varied considerably, e.g., when repeating parts of the piece.
Registration can be very effective and good at the right places and even should be used there, but is often used at problematic parts just „to make a difference“. Typical example: You are afraid that a repetition sounds boring, and therefore play it metallico. However, all too often the result is that the repetition sounds as boring as the first execution, plus it sounds clanking.2)
Corey Fujimoto: Canon in D (Pachelbel)
etc.