Hi, I just joined this group... I guess as a Rhythm Guitarist I would practice new chord formations and changing from chord to chord... the premise being that i can strum well enough to handle a variety of songs so learning new chords and getting used to using them in songs i know well would be what i'd do with 20 min.
honestly though... i haven't been practicing much if at all the past few years... =P haven't been playing much either... hmmm... maybe i should dust off my guit and get started... =) so anyway... was this the kind of answer you were looking for?
I just realized I haven't given my own answer. Because I am not that hot about sight-reading, I'll do stuff that requires me to read notes. That way I grow in this area. I'm more a pianist/keyboardist, but I don't believe we need much raw technique to play for worship, so I won't work on those.
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