Is is bad to play bass guitar with your thumb?

by US Army Africa
Question by 4point0: Is is bad to play bass guitar with your thumb?
I've been playing bass for a couple of weeks now, and will be starting lessons soon. But until I start the lessons I've been learning songs from tabs online and I've been doing pretty good. But there's one thing I see as a potential problem: I play with my thumb. I initially thought that I was going to play with a pick as that's what I see from bass players I'm familiar with. But some guys that play bass

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