Doublebass and electric bass are my number one, but the only thing I get paid to play is saxophone. Mandolin is taking up a lot of my time currently, around the house, and I'm finally beginning to make some progress.
For me, doublebass is most natural, most ergonomic, and electric bass, saxophone, mandolin give me far more hand problems. Especially saxophone.
I would say that if someone is having pain issues playing doublebass, the problem is more likely technique than setup.
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