This is a tutorial video on how to play bass, brought to you by How to Play Bass, hosted by Paul Wolf. In this lesson Paul teaches you how to tune your bass guitar down to what is called "Drop D" tuning. Follow along with him, as Paul demonstrates how to achieve this tuning by two different methods. The first method is done by tuning to the 'A' string, and de-tuning the 'E' string to 'D'. The second method involves a similar process, this time using the 'D' string to achieve the same effect.