no offense, but i would think if someone shows a "good level of expertise on bass," that they would be able to walk over some dominant 7th chords
Let me try and explain. In the UK (and other places for all I know) there are grading exams that are overseen by the Associated Boards of the Royal School of Music or by Trinity College London.
The grading system has separate 'practical musicianship' and 'theory' exams and it is quite possible to take one stream without taking the other. Most musical education in the UK is done through the school system with peripatetic teachers giving kids a weekly lesson on their chosen instrument. These lessons, given the limited time available for each lesson, concentrate on teaching people to play the instrument rather than theory.
So, by the time people reach Grade 8 in 'practical musicianship' they have learned the techniques required to play their instrument to quite a high standard, they can sight read, they can play scales and arpeggios and they are usually good enough to play in youth orchestras or string quartets and make a respectable sound.
Both of my children have Grade 8 violin and when they lived at home it was quite common to hear respectable renditions of Vivaldi, Bach duets, Beethoven, Massenet etc floating through the house
Some musical theory drip feeds in of course, but usually the musical theory stream is secondary to the performance (with only one hour a week at most for lessons it's understandable). That means that it's quite possible to be a reasonably accomplished musician with theoretical knowledge that lags behind. You can argue about the rights and wrongs of this system, but that's the way it is.
In my view it would be better to combine both, but if one has to give, then I guess it comes down to whether people prefer to play and listen to music or discuss theory.
There are limitations of course, in a celtic band I played in for a while, we had a fantastically accomplished violin player who could sight read anything put in front of her, but ask her to improvise a solo with a blusey feel over a simple twelve bar progression and she was completely lost. In another band that my drummer played in they had a flute player who had done two gigs a week with their band for 10 years and simply could not play without the dots in front of them. Literally forgot their music at one gig and had to sit out because they hadn't memorised a single tune in 10 years of gigging
In those instances they become inferior musicians to those self taught musicians with no reading or theory whatsoever but who can jam for days in any style you throw at them.
In an ideal world a rounded musical education would teach the theory, the practical musicianship, the ability to improvise and at the same time would nuture the passion for music and encourage individuality. Nice trick if you could do it.
The grade syllabuses are here
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