Hi Scot feel free to post a link to the bass only track and we can try and work some chords/scales that you can use.
Depending on what style of blues your writing it will probably only have 3 chords. What's the first note you play one bass? If for example you play an G I'd guess that the chords you'd be wanting to play will be G major - C - D (very simple stuff) like I said it all depends on the style of your track. But as a rule the three chord track works for 99% of blues tracks.


Rgds
Andy



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