[quote name='Annoying Twit' timestamp='1385661478' post='2290873']
Can I add the question (which I think might be pertinent to the OP, but please ignore this if it isn't), but how do people improve their phrasing when improvising. I find that knowing which notes to use only gets me so far. Trying to avoid stepwise motion gets me a bit further, but improved phrasing is an important nut that I need to make progress in cracking.
The reason I think this might be relevant to the OP is that I feel that working on phrasing is how I'm going to make progress in avoiding improvisations that are ".. too dull, boring or repetitive". Perhaps that might also apply to Robot_Pelican_Chin.
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Now I'm not a pro at improvising at all but a tip is to play in 'sentences'. You only say so many words before you take a breath. Do the same thing with playing.
You could try the play what you're singing thing. I'm not at this stage yet though.
I'm sure there will be better people along like Urb or Hector etc. who I know are much better at the whole improv thing than I am.