Tuning Down a Half Step

This is a 1.28 minute video response from Jim Deeming on Apr 9th, 2009

Question:

"Onebobstirling asked "When you tune down a half or hole step do you keep playing the same cord patterns or do the patterns change to make the cord harmonically correct? Example, if you are tuned down one hole step and play an "A" cord pattern the notes that are played are BGD, not ACE.""