I was taught that minor scales sound different to major scales i.e. Major sounds happy and minor scales sound sad. The 7th note is always raised a semitone even though the accidental is not mentioned in the key signature. The minor scale is related to a major scale, which the tonic note you play 4 semitones up. JL
The 7th note is NOT always raised. That's why we play natural melodic minor where it's raised going up and lowered going down.
I know, I was refering to Harmonic minor scales where the 7th nite is always an accidental. JL
I was taught that minor scales sound different to major scales i.e. Major sounds happy and minor scales sound sad.