Compare
Major vs Mixolydian
Major with a lowered 7th. The dominant-seventh vibe of folk, blues-rock, and Celtic music.
Major
R
♭2
2
♭3
3
4
♭5
5
♭6
6
♭7
7
Mixolydian
R
♭2
2
♭3
3
4
♭5
5
♭6
6
♭7
7
What's different
Only in Major
7
Only in Mixolydian
♭7
In both
R23456
Other comparisons