I've been starting to learn music theory with the Elementary Rudiments of Music book, and I am part way through the minor scale key chapter. What I was wondering is if knowing the minor scale key signatures, relative majors/minors are actually important.
I know that minor scales are important,but I'm not sure why knowing the stuff in this chapter is important if you know the differences between the scales and can write them down. (Like a C dorian has a flat third, a C mixolydian has a flat third and seven, etc)
Not sure if this is the right forum, but if it isn't then can a mod please move it.