There are few things cuter than a little kid killing it on the ukulele.
Trainor brought along a ukulele to her audition and blew him away.
1896, from Hawaiian 'ukulele, literally "leaping flea," from 'uku "louse, flea" + lele "to fly, jump, leap." So called from the rapid motion of the fingers in playing it. It developed from a Portuguese instrument introduced to the islands c.1879.