Mixolydian is the 5th mode of the major scale. In C major we get G Mixolydian, the notes are: G – A – B – C – D – E – F – G. Mixolydian, like Ionian and Lydian is a major type of mode because it has a major 3rd. However it differs from Ionian and Lydian in that it has a minor 7 not a major 7.

This means that we get a Dominant chord, G7 from the mode (Rather than GMaj7), this is made up of a Root, major third, perfect fifth and a minor seventh. Despite being similar to the major scale the mixolydian mode has a lot of mileage for musical endeavours.