Guitar parts that had worked well for years with a piano filling out our band's sound were suddenly laid bare. They didn't work any more and I didn't have much luck trying to work things out on the fly. Our 45 minute slot felt like a very long shift
After this hint to the power of the foot tap as the cornerstone of practice and improvement I began incorporating it into all my lessons. Progress became much quicker for every student and lessons became more enjoyable, both for them and for me!