A rather pretty style of playing ukulele is campanella (from the Italian for ‘little bell’), a way of picking which allows multiple strings to ring at the same time, creating a harp-like sound.
Jonathan Lewis devotes his site Jon’s Ukulele to campanella fingerstyle ukulele, including some interesting examples of Celtic, medieval, Baroque & folk tunes. He has a number of tutorials on there, including a useful free How To Play Campanella Ukulele guide. Many of his posts and YouTubes include a tab of his arrangement.
Recently he made the following free book available for circulation. It contains ten traditional tunes (some are known by different titles in various regions):
Campanella Ukulele: Ten Morris tunes now available to download for free (or a contribution if you insist). I may expand it at some point in the future but as I’ve been promising to publish the tabs for a long time I decided to release it now.
Here’s the link to Gumroad
Go to my YouTube to hear all of the tunes, there’s a playlist of Morris tunes
1. The Banks of the Dee
2. Brighton Camp
3. Bumpus O’Stretton
4. The Cuckoo’s Nest
5. Galopede
6. Lads a Bunchum
7. The Nutting Girl
8. Old Molly Oxford
9. The Princess Royal
10. Ribbon Dance
Here he is performing Brighton Camp (also known as The Girl I Left Behind Me & Waxie’s Dargle) :
People of Lewisham's Ukulele Club 