Definition: Small frame drum, usually with a skin and metal jingles around the rim. probably of middle eastern origin, similar to the Dafe. known in Europe since at least the 18th century. Read the full Hand Percussion FAQ Page.
The concert uke is a little bigger than the soprano and thus has higher string tension. Soprano and concert ukes are tuned GCEA (C tuning), or ADF#B (D tuning).