Well Wolftone, for some the D comes in handy, especially when working on one of those 5 string Bass tunes that were good in the 60's. (As I do)
To get that 6th string D on my Strat I have to detune it and its useful that RT will give it for the backing track Bass. (makes the PA speakers "rock" too). Before then the midi Bass always went UP to the first available D which always sounded too soprano. lol!
cheers
ian

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