Exercise 4

If we improvised on the Dorian mode, the tonality would remind us maybe of the Welsh folk-song Hen Ferchetan wedi Colli'i Chariad

if you’re unfamiliar with this one, how about the song What Shall We Do with a Drunken Sailor in English?

The trick with the improvisation is always to use the first note of a mode as the last note of your improvisation. Give it a try.