Wow! The practice is really paying off. I am delighted with the progress you've made. We were talking about the song "Long Black Veil" and will sing it together next week. I have listed several other songs that use the same tone set (notes). I have done them all in the key of D as that is the key we'll use for "Long Black Veil". I have also recorded two singing exercises using the same notes. See you next week.
singing exercise (m s l)
singing exercise (s, l, d r m s l)
Swing Low, Sweet Chariot in D
Tom Dooley in D