Now, just to twist your brain in a slightly different direction...
Sometimes when guitarists use the word 'modes' (Aeolian, Mixolydian, etc...), what they actually mean is the shape/pattern they are playing, which is different than playing a 'modal' song.
A modal song (something you can find examples of by composers like Bela Bartok, if I recall) can also be a very interesting thing.
Here is an example:
Take a simple familiar tune that you know, like Yankee Doodle, Happy Birthday (be careful, Happy Birthday starts on scale step 5, not on 1), Frere Jacque, etc...
Write down the numbers of the scale steps.
| 1 1 2 3 1 3 2 _ | 1 1 2 3 1 1 5 _ | 1 1 2 3 4 3 2 1 | 7 5 6 7 1 _ 1 _ |
Now, this is in major/Ionian, typically. But you can play this in any other mode and some will sound pretty cool or pretty strange.
For example, if you start a Lydian scale on 1, you have the same thing as Ionian but with a #4,
1 2 3 #4 5 6 7 1 (correct me if I'm wrong, it's been a while)
so you could play Yankee Doodle in Lydian
| 1 1 2 3 1 3 2 | 1 1 2 3 1 _ 5 _ | 1 1 2 3 #4 3 2 1 | 7 5 6 7 1 _ 1 _ |
What you have to keep in mind here, is that your chords will change from Ionian/major also:
instead of I ii iii IV V7 vi viidim
I II7 iii #ivdim V vi vii
try playing: I vi IV ii V7 I (major)
now playt he same thing in Lydian: I vi #iv II7 V I
lots of times in actual modal songs, you will find yourself using different dominant-functioning chords.
Instead of the Ionian/Major I V I, you might find yourself doing this in Lydian I II7 I.
It's different, but your ears can get used to these things.
If you are in Mixolydian, you might do this I bVII7 I (instead of I V I)
since in Mixolydian you have:
scale steps: 1 2 3 4 5 6 b7 1
and chords: I7 ii iiidim IV v vi bVII
it can get extra colorful if you add the correct 7ths to all of these chords also.
Try playing I vi IV ii V7 I
now in Mixolydian:
I7 vi IV ii v I7 (keep in mind, this v chord is minor in Mixolydian).
And, the dominant 7th on the I chord might sound confusing, so you could always leave it off.
Anywho, something you can play around with today, I have to get ready for work :P
I'll write out Yankee Doodle in the other modes if I remember later
For the heck of it