When I was a kid growing up on Long Island, in a suburban town called Massapequa, I lived 5 houses down the block from a kid 4 years older than me. He played guitar, and he was really good. His name is Brian Setzer. I was friends with his younger brother Gary and I was over there all the time, and I heard Brian playing guitar. I loved it! I wanted to play guitar too, like him.
In the public school, I had to choose an instrument. Everybody told me String bass was the closest to guitar, so I took that.
I simultaneously began studying both guitar and string bass, and became decent at both instruments. I started forming bands with other young kids, playing guitar, and became principle bass in my school orchestras.
I then joined a church folk group as their electric bassist. Now I was working on 3 instruments.
After High school, I fronted a couple of original bands on guitar, while going to college and working.
Some friends of mine, who were not quite musically up to my level, asked me if I would sit in on bass while they tried to form a band to play a couple of tunes during their other friend's professional band during one of the bands breaks between sets. I said sure, why not.
We played during the break, and we had a lot of fun. They asked me to keep jamming with them. I had nothing going on, so I agreed. Quickly, I took over as the musical director.
We fumbled around, and one day 2 of the guys pulled me aside after a jam and asked how we could get better. I said they didn't want to hear what I had to say. They pressed me, and I said (wait for it...), fire the drummer. He sucked. Really sucked.
They took my advise and let him go. We started audtioning drummers. One day, I walk in, ans the drummer sitting there is probably the best drummer I had ever played with before. He was between gigs and looking for something.
It was awesome! I had played guitar in a band with this drummer before, but never bass. I finally knew what it meant to be "locked in".
We ended up becoming a pretty good band playing the Long Island club circuit.
I don't think of myself as a guitarist or a bassist. I think of myself as both. And when I write music, I'm constantly considering how the 2 instruments work with each other.