some of the members are into blues and Jazz. When you play, do you strum or finger pick or both mainly.
Hi mangorockfish
"playing jazz" (let me skip blues) still covers a spectrum of styles. (a) You can sing jazz (or jazzy) songs and ukulele is strictly an accompaniment. (b) you don't sing, but you play jazz tunes as a solo instrumental. (c) You play with someone else and do ukulele duet. (d) you are in a jazz trio, combo or a band as a rhythm player. (e) you are in a jazz trio, combo or a band and you take lead solo.
For (a), I think you can finger strum (or use pick). Finger strumming will give you a bit more flexibility but you can do it either way.
(d) Probably same as (a) but you may need volume, so pick-strumming may work better. Personally, I can't remember if I ever saw an ukulele in a rhythm section
(e) This will be a single line solo so pick-strumming may work better.
I don't do any of the above. I do (b) (amd maybe (c)). I personally prefer finger style that allows me to be selective about the chord voicing. If I want to play 1st and 3rd strings only, it's almost impossible with a pick. My background is an acoustic and classical guitar so it's natural for me.
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As to tabs, what I do is to get a basic chord progression for a song (I love key of C or G so I transpose - jazz people use E-flat which I hate). And then see f I can make something out of it. I don't study any books but I've seen some suggestions to learn how to build your own arrangement. Playing jazz (or jazzy tunes), the fun part is to come up with your own arrangement.
Good luck, ,pick on, and have fun!
Chief