In the following video, at 34:30, Joe Pass suggests practicing scales by choosing a high note, playing a chord below that note, then play "the scale" from the root of the chord to the chosen note:
I want to practice this so I can internalize chords while associating them with scales. I think that will help me swap from chord to melody faster.
The question is: After choosing my chord, which scale should I use over it? I can see Joe playing mostly Major and Diminished Scales in the video.
For example, if I choose a Major 7th chord, I could play the major scale that makes it a I chord (Ionian). I could also go for a IV chord and play Lydian. Is that what he is doing? OrDoes he just goesuse Ionian all the wayonly? Do I have more options?