No, they don't usually play the same part. Typically, the upright is playing half notes and the TicTac is playing 8th notes.
I've always liked baritone guitar, Morricone's spaghetti western tracks, I've seen Dave Gonzales use one in the Hacienda Brothers and Paladins. But I'm really unfamiliar with the bass VI. Sounds like its tuned a whole octave lower than the guitar. Are the strings any thinner than a regular bass?
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