In the Level 1 and Level 2 arrangements the thumb always plays the 5th string, and only the 5th string. The Level 3
arrangements are not that much different than the Level 2 arrangements except for the addition of the drop thumbing technique. Sometimes there are notes that you are just not able to get
to unless you go down and play the string with your thumb. In addition, this technique tends to add some nice variety to the sound of the clawhammer strum. It may seem difficult at first,
but just like the bum-ditty it becomes a simple movement once it is mastered.
Practice the exercise below until you get a feel for it, and then practice any measures containing
drop thumbing in the Level 3 songs. Note that below there is a "T" under the tablature in the instances where you need to bring your thumb down. The "T" is not on the
regular tablatures, but the pattern is the same so the notes that need to be played with your thumb should be obvious with a little practice.