Jake is amazing and a truly awesome guy. Have been following him for years now, having met him on many occassions now...in the Islands and here in the Continental US. Used to be with the band Pure Heart and has also been with Colon. Sits in on countless others, including other bruddahs, Herb Ohta, Jr., and even Jimmy Buffett.
If you can find the Pure Heart releases now (most are well out of print), you should definitely pick them up. Have them all and they are among my most prized in my Hawaiian collection (which is huge). Look for Colon too. Don't know if their only full release is still in print. Either way, they are absolutely stellar and I can't recommend them highly enough.
Also look for Ernie Cruz, Jr. and the other many Ka'au Crater Boys (and also Palolo - feat. Troy Hernandez, the other half of Ka'au Crater Boys...it was Ernie Cruz, Jr. and Troy Fernandez).
'Ale'A (another group) are amazing as well.
Edited to add -
Each and every Jake Shimabukuo cd is amazing as well. Have everything he's ever done and it is all excellent.