Well, this is getting very complicated, what with all the W's, H's, b's, and 1/2's floating around.

Modes would be more fun if we realized that they were surely developed as a way to help musicians and singers learn new pieces more easily. In the past, paper/vellum was costly, inking music in was tedious, and few people could read it even when it was done. So surely modes were developed as a way to speed up the sounding-out and memorization of new chants, airs, and dances.

Picture a guy who plays C-recorder, where three fingers down produce the note G. He wants to share a song with a bass player, who produces a C when he has three fingers down. So the two can't communicate by sharing fingerings. They can't read music. So the first one plays the new tune a few times and says "It's Phrygian." The second gets the tune in his head and goes off to practice, keeping in mind that a Phrygian tune will use certain predictable notes. Voila! The next day they are playing it at the great hall of the next noble house down the road.

We should all leave our computers and make up some tunes in these modes, particularly the ones that have been almost forgotten, and play them with our friends.

PS I tried "Lemon Tree, Very Pretty," and it's not in the Lydian mode as stated above. It's in the key of F.